TP-Link Omada ES208GP 8-Port Gigabit Easy Managed Switch with 8-Port PoE+ is a business network switch designed for stable wired connectivity and full PoE power delivery. It is ideal for IP cameras, Wi-Fi access points, VoIP phones, and other enterprise devices. The switch includes 8 Gigabit Ethernet ports, and all ports support PoE+ under IEEE 802.3af/at standards. Therefore, it can power multiple devices using a single Ethernet cable. In addition, it provides a total PoE power budget of 64W, with up to 30W per port for high-power devices. Moreover, it supports plug-and-play installation for fast deployment. As a result, users can expand their network without complex setup. In addition, Omada cloud integration allows centralized monitoring and remote management through a controller or app. The switch also includes VLAN, QoS, IGMP Snooping, and port isolation. Therefore, it improves traffic control, network security, and performance stability. Furthermore, PoE Auto Recovery can automatically restart unresponsive connected devices such as IP cameras. Its fanless metal design ensures silent operation and durable long-term use. Therefore, it is suitable for office environments and surveillance systems. Finally, the TP-Link ES208GP delivers reliable Gigabit switching, full PoE+ support on all ports, and simple managed network control for professional setups. Specifications: Ports: 8× Gigabit Ethernet ports PoE: 8× PoE+ ports (IEEE 802.3af/at support) Power: 64W total PoE budget, up to 30W per port Management: Omada cloud/controller-based control Features: VLAN, QoS, IGMP Snooping, and PoE Auto Recovery
The 85W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. The 85W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. When the connection is secure, an LED located at the head of the DC connector lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length, while the AC wall adapter (also provided) gives you an even easier and more compact way to travel. Designed to be the perfect traveling companion, the adapter has a clever design which allows the DC cable to be wound neatly around itself for easy cable storage. Compatible with MacBook Pro with 13-inch Retina display. See this article for more details about choosing the right one. Knowing which specific Mac model you have is important. If you are running OS X Lion (10.7) or later go to the “” menu at the top left of your screen, choose “About this Mac” then click the “More Info…” button. Your Mac model and generation will be displayed. If you are running an earlier version of OS X, you can enter your serial number here to find out which model you have. COMPATIBILITY Mac Models: MacBook Pro (Retina, 13-inch, Late 2012 – 2015)
Toner Cartridge Manufacturer Brother Brand BROTHER Model number TN-3437 Product Dimensions 70 x 50 x 30 cm; 1.19 Kilograms Color Black Manufacturer Part Number TN-3437 Item Weight 1.19 Kilograms Specifications: Brand Name BROTHER Color Black Item Weight 1.19 Kilograms Included Components Toner Cartridge 1 year warranty Manufacturer Link
The Acer Aspire 5 A515-58GM-77HH is a 15.6-inch laptop designed for productivity, multimedia use, and light gaming. It uses the Intel Core i7-1355U processor to deliver strong performance for multitasking, office work, and everyday applications. Moreover, it includes the NVIDIA GeForce RTX 2050 graphics card for improved performance in creative tasks and supported games. Additionally, the laptop features 8GB DDR4 RAM and a 512GB NVMe SSD, which improves system speed, responsiveness, and storage efficiency. The fast SSD reduces loading times for apps and files. Therefore, it supports smoother daily workflows and light content creation. Furthermore, the 15.6-inch Full HD display provides clear visuals for work, entertainment, and gaming. The slim-bezel design increases screen space while keeping the device compact. In addition, it includes USB, HDMI, Wi-Fi, and Bluetooth for flexible connectivity. The combination of Core i7 performance and RTX 2050 graphics supports balanced productivity and light gaming use. Moreover, the system is optimized for stable performance and efficient thermal behavior. The model includes a 1-year warranty for standard support. Overall, this laptop combines Intel Core i7 performance, RTX 2050 graphics, fast SSD storage, and Full HD display quality for versatile everyday computing and entry-level gaming. Specifications: CPU : Intel Core i7-1355U RAM : 8GB Storage : 512GB SSD NVMe GPU : NVIDIA GeForce RTX2050 OS : No OS Screen : 15.6″ Full HD, IPS Color :Steel Gray Part Number : NX.KGZEM.00B
The Logitech Lift Ergonomic Mouse (Rose, 910-006476) is a vertical wireless mouse designed for comfortable everyday use. It places your hand in a natural handshake position to reduce wrist strain. Additionally, it is built for small to medium hands for improved comfort and control. Moreover, it includes precise optical tracking with adjustable DPI from 400 to 4000. This allows smooth and accurate cursor movement for productivity tasks. Furthermore, it supports Bluetooth Low Energy and Logi Bolt USB receiver connectivity. It includes 6 buttons for navigation and workflow efficiency. It runs on a single AA battery with up to 24 months of battery life for long-term use without frequent changes. Overall, the Logitech Lift Ergonomic Mouse delivers ergonomic comfort, stable wireless performance, and precise control for daily productivity. Specifications: Vertical ergonomic design for natural hand position Adjustable 400–4000 DPI optical tracking sensor Bluetooth Low Energy and Logi Bolt USB support 6-button layout for productivity control Up to 24 months battery life with AA battery
The Mars Gaming MCV4 Custom Premium Gaming Tower is designed for gamers who demand both performance and aesthetics. Its frameless 90° tempered glass panels provide a clear view of your components, enhancing the visual appeal of your setup. This case supports E-ATX, ATX, Micro-ATX, and Mini-ITX motherboards, offering flexibility for various builds. It accommodates graphics cards up to 390mm in length and CPU coolers up to 185mm in height. Storage options include multiple HDD and SSD bays, catering to diverse storage needs. The MCV4’s dual-chamber design separates the power supply and storage drives from the main components, promoting better heat management and cleaner cable organization. This layout not only improves airflow but also provides ample space for advanced configurations. For cooling, the case supports up to nine 120mm fans and is compatible with liquid cooling systems up to 360mm. Strategically placed mesh panels enhance airflow, ensuring your components remain cool during intense gaming sessions. The top I/O panel features one USB 3.0 port, two USB 2.0 ports, and HD audio and microphone jacks, providing convenient access to your peripherals. Available in black and white finishes, the MCV4 allows you to choose the color that best suits your setup. Specifications: Dimensions : 400x289x440mm Weight : 6.5Kg Size : Tower Window : Full tempered glass front and side window Motherboards compatibility : E-ATX / ATX / MicroATX / Mini-ITX Ports : USB3.0 x1 / USB2.0 x2 / HD Audio + Mic Internal drive bay : 2x 3.5″ HDD / 3x 2.5″ SSD VGA max. length : 418mm
The Linksys 8-Port Managed Gigabit PoE+ Switch LGS310MPC delivers high-performance networking with Power over Ethernet support. First, it provides fast and reliable connections for multiple devices while powering PoE+ compatible devices through Ethernet cables. In addition, the switch includes advanced management features such as VLAN, QoS, and traffic monitoring. Users can optimize network performance, prioritize critical applications, and secure data across the network. Moreover, plug-and-play setup and compact design make installation simple and reliable. Finally, energy-efficient operation ensures stable performance for small business and office networks. Specifications: 8 Gigabit ports with PoE+ to power compatible devices Advanced management with VLAN, QoS, and traffic monitoring Optimize network performance and prioritize critical applications Easy plug-and-play setup with compact and durable design Energy-efficient operation for reliable small office networking
Looking to streamline your network setup? The D-Link 8-Port Gigabit PoE Unmanaged Desktop Switch is the perfect solution. With eight high-speed Gigabit Ethernet ports, you can connect all your devices seamlessly. Experience lightning-fast data transfers with Gigabit Ethernet technology. Whether you’re streaming HD video, gaming online, or transferring large files, this switch ensures smooth performance without any lag. One of the standout features of this switch is its Power over Ethernet (PoE) capability. Say goodbye to bulky power adapters and messy cables. With PoE, you can power compatible devices such as IP cameras, VoIP phones, and access points directly through the Ethernet cable. Additionally, setup is a breeze with this unmanaged switch. Simply plug it in and connect your devices – no configuration required. Its compact desktop design makes it ideal for small offices, home networks, or anywhere space is limited. Furthermore, rest assured knowing that your network is protected with D-Link’s renowned reliability and durability. With sturdy construction and quality components, this switch is built to last. In summary, the D-Link 8-Port Gigabit PoE Unmanaged Desktop Switch offers simplicity, speed, and efficiency for your network needs. Upgrade today and enjoy hassle-free connectivity for all your devices. Specifications: Interface : 8x 1000BASE-T Gigabit Ethernet Switching Capacity : 16Gbps Part Number : DGS-1008P
Keyboard Compatible for MacBook PRO Retina 15″ A1398 (Late 2013-MID 2015) US Layout Compatibility: MacBook Pro Retina 15″ A1398 Late 2013 (IG): ME293LL/A (2.0 Core i7) Late 2013 (IG): ME293LL/A (2.3 Core i7) Late 2013 (IG): ME293LL/A (2.6 Core i7) Mid 2014 (IG): MGXA2LL/A (2.2 Core i7) Mid 2014 (IG): MGXA2LL/A (2.5 Core i7) Mid 2014 (IG): MGXA2LL/A (2.8 Core i7) Late 2013 (DG): ME294LL/A (2.3 Core i7) Late 2013 (DG): ME294LL/A (2.6 Core i7) Compatibility: Mid 2014 (DG): MGXC2LL/A (2.5 Core i7) Mid 2014 (DG): MGXC2LL/A (2.8 Core i7) Mid 2015 (IG): MJLQ2LL/A (2.2 GHz Core i7) Mid 2015 (IG): MJLQ2LL/A BTO (2.5 GHz Core i7) Mid 2015 (IG): MJLQ2LL/A BTO (2.8 GHz Core i7) Mid 2015 (DG): MJLT2LL/A (2.5 GHz Core i7) Mid 2015 (DG): MJLT2LL/A BTO (2.8 GHz Core i7) Identifying Numbers APN: 661-6532, 661-8311,661-02536 Specification】The keyboard is without frame! pls see detail compatible model in descrirption. Safe】Easy for you replace your faulty,cracked or broken keyboard ,seller remind that you should replace the keyboard in the off state. All pictures are taken from the real item, please check carefully before biddingReplacement and high quality,Replace your faulty, cracked or broken keyboard Replacement and high quality,Replace your faulty, cracked or broken keyboard Each keyboard is tested before shipping Please contact us if you have any question or problems.
The ViewSonic VA2710-mh 27″ 60Hz Monitor brings stunning visuals to your desk. With its 27-inch Full HD display, you can enjoy vibrant colors and sharp details, perfect for work, entertainment, or gaming. This monitor features a sleek and modern design, making it a stylish addition to any workspace. The slim bezels provide a clean and uncluttered look, enhancing your viewing experience. The ViewSonic VA2710-mh offers versatile connectivity options, including HDMI and VGA inputs. This makes it easy to connect your computer, laptop, or gaming console, ensuring compatibility with various devices. With a 60Hz refresh rate, the ViewSonic VA2710-mh delivers smooth and fluid visuals. Whether you’re watching movies, playing games, or working on graphic design, you’ll appreciate the clarity and responsiveness of this monitor. The SuperClear IPS panel technology provides consistent brightness and accurate colors from any viewing angle. This means you can enjoy the same high-quality visuals, whether you’re sitting directly in front of the screen or off to the side. The ViewSonic VA2710-mh is designed for comfort and productivity. It features flicker-free technology and a Blue Light Filter, reducing eye strain during extended viewing sessions. This makes it an ideal choice for those who spend long hours in front of their screens. In conclusion, the ViewSonic VA2710-mh 27″ 60Hz Monitor combines stunning visuals, versatile connectivity, and a sleek design for an exceptional viewing experience. Upgrade your setup today and enjoy vibrant and clear visuals with the ViewSonic VA2710-mh monitor. Specifications: Display : 27″ IPS Resolution : FHS 1920×1080 Refresh Rate : 60Hz Response Rate : 5ms
In the world of laptops, the Lenovo IDEAPAD 3 15IAU7-82RK00U5AK stands out as a versatile and stylish solution, offering a perfect blend of functionality and design for an adaptable computing journey. Transitioning to its key features, the IdeaPad 3 15IAU7 excels in providing reliable performance for everyday tasks. This laptop is designed to effortlessly handle your daily computing needs, ensuring a smooth and responsive experience. Moreover, this laptop impresses with its sleek and modern design. The Lenovo IdeaPad 3 15IAU7 not only catches the eye with its aesthetic appeal but also ensures portability, making it an ideal companion for users with dynamic computing requirements. In addition to its functionality, the IdeaPad 3 15IAU7 offers a user-friendly design with a comfortable keyboard and a variety of connectivity options. This ensures a seamless transition between work and entertainment, adapting effortlessly to your diverse needs. Furthermore, Lenovo’s commitment to user satisfaction is evident in the IdeaPad 3 15IAU7’s durable build and energy-efficient design. It’s a reliable partner for your daily computing tasks without compromising on style. In conclusion, the Lenovo IDEAPAD 3 15IAU7-82RK00U5AK redefines versatility and style, combining reliable performance, sleek design, and user-friendly features. Elevate your daily computing effortlessly with the IdeaPad 3 15IAU7 – your adaptable and stylish companion for versatile computing! Specifications CPU : Intel Core i7-1255U RAM : 8GB Storage : 512GB SSD M.2 2242 PCIe 4.0×4 NVMe GPU : Intel Iris Xe OS : No OS Screen : 15.6″ FHD (1920×1080) Color : Arctic Grey Part Number : 82RK00U5AK
The HP 970XL High Yield Original Ink Cartridge Black is designed for high-volume office printing with reliable and consistent output. It delivers sharp black text and clear document quality for daily business use. HP develops this high-yield cartridge to support longer printing sessions with fewer replacements. It works smoothly with compatible HP printers to maintain stable ink flow and dependable print quality. The HP 970XL High Yield Original Ink Cartridge Black produces crisp black text for reports, invoices, forms, and office documents. It helps improve workflow efficiency by reducing downtime during busy print tasks. The cartridge installs easily and supports clean, professional printing across large print jobs. It is made for users who need high-capacity printing, reliable output, and consistent performance in office environments. Specifications: High-yield cartridge for large print volumes Sharp black text for clear documents Reliable performance for office printing Stable ink flow for consistent output Easy installation and replacement
The ASUS USB-N10 Nano B1 Adapter is a compact wireless USB adapter designed to add WiFi connectivity to desktop and laptop computers. It supports WiFi 4 (802.11n) technology with wireless speeds up to 150Mbps, making it suitable for web browsing, email, and everyday online activities. Therefore, it provides a simple networking solution for systems without built-in WiFi. The nano-sized design remains almost flush with the USB port, allowing users to keep it connected without blocking nearby ports. In addition, the USB 2.0 interface offers quick installation with broad compatibility across Windows, macOS, and Linux operating systems. As a result, users can upgrade wireless connectivity with minimal setup. The adapter operates on the 2.4GHz wireless band and supports WEP, WPA, and WPA2 encryption to help secure wireless connections. Moreover, ASUS provides utility software for network management and connection setup on supported operating systems. Therefore, users can enjoy reliable wireless performance with enhanced network protection. The lightweight design weighs only 2g and measures just 7.1 × 14.9 × 17.4mm, making it easy to carry and ideal for portable devices. In addition, its compact form factor helps maintain a clean and organized workspace. Specifications: Wireless standard: WiFi 4 (IEEE 802.11b/g/n) Maximum wireless speed: Up to 150Mbps Interface: USB 2.0 Security: WEP, WPA, WPA2 Operating system support: Windows, macOS, and Linux
The HP 728 69-ml DesignJet Original Ink Cartridge Matte Black is designed for precise, professional large-format printing. It delivers deep matte black output with sharp detail for technical drawings, maps, and design work. HP builds this cartridge for compatible DesignJet printers to ensure stable ink flow and consistent print quality. It supports smooth operation during everyday and professional printing tasks. The HP 728 69-ml DesignJet Original Ink Cartridge Matte Black produces clean lines and accurate shading for CAD files and graphics. It helps maintain reliable results across standard print jobs. The cartridge installs easily and works seamlessly with supported HP systems. It is made for users who need clear detail, dependable output, and consistent matte black printing performance. Specifications: 69ml original HP matte black ink cartridge Deep black output for professional prints Sharp detail for technical drawings Stable ink flow for reliability Easy installation and replacement
The MSI MAG FORGE 130A AIRFLOW Mid-Tower ATX Gaming PC Case is built for gamers who need strong airflow, modern hardware support, and a clean design. It combines a mesh front panel, tempered glass side panel, and pre-installed Auto RGB fans to keep gaming systems cool and visually appealing. The case supports ATX, Micro-ATX, and Mini-ITX motherboards. Therefore, it offers flexibility for a wide range of gaming and productivity builds. In addition, it comes with three pre-installed 120mm Auto RGB front fans and one 120mm Auto RGB rear fan for efficient cooling straight out of the box. Moreover, the chassis supports graphics cards up to 330mm long and CPU coolers up to 160mm high. As a result, it accommodates many modern gaming components with ample clearance. It also supports radiators up to 240mm on the top and front, allowing easy liquid cooling upgrades. The front I/O panel includes two USB 5Gbps Type-A ports, audio and microphone jacks, plus dedicated power, reset, and LED control buttons. Furthermore, the case features a 4mm tempered glass side panel, magnetic top dust filter, removable bottom dust filter, and support for up to eight system fans. Finally, the MSI MAG FORGE 130A AIRFLOW delivers excellent airflow, broad hardware compatibility, and stylish Auto RGB lighting for reliable gaming PC builds. Specifications: Motherboard Support: ATX, Micro-ATX, and Mini-ITX Cooling: 3 × 120mm Auto RGB front fans + 1 × 120mm Auto RGB rear fan Hardware Support: Graphics cards up to 330mm and CPU coolers up to 160mm Cooling Compatibility: Supports up to 240mm front and top radiators with up to 8 system fans Design: Mesh front panel, 4mm tempered glass side panel, magnetic dust filter, and dual USB 5Gbps ports
The Asus ROG Flow Z13 is a powerful and portable gaming tablet that delivers high-performance gaming on the go. It combines the portability of a tablet with the power of a gaming laptop. Whether you’re gaming, creating, or multitasking, this device can handle it all. Equipped with the latest Intel processors and NVIDIA graphics, the Asus ROG Flow Z13 provides smooth performance. You can enjoy your favorite games with stunning visuals and fast frame rates. The 13.4-inch touchscreen display offers a high refresh rate and vibrant colors for an immersive experience. The detachable keyboard makes it easy to switch between gaming and work. Use it as a tablet for casual browsing or attach the keyboard for a full laptop experience. With its lightweight design, you can take it anywhere without hassle. Cooling is never an issue with the Asus ROG Flow Z13. Its advanced cooling system ensures optimal performance during intense gaming sessions. You can game for hours without worrying about overheating. Connectivity options are versatile, with USB-C, USB-A, and HDMI ports available. The device also supports external GPUs, giving you extra power when needed. Wi-Fi 6 ensures fast and stable internet connectivity for smooth online gaming. Battery life is impressive, allowing you to stay productive and entertained throughout the day. Plus, the fast-charging feature helps you get back to gaming quickly. Upgrade your gaming experience with the Asus ROG Flow Z13, the ultimate portable gaming machine. Specifications: CPU : RYZEN AI MAX+ 395 RAM : 32GB Storage : 1TB SSD NVMe OS : Windows 11 Screen : 13.4″ (2560 x 1600) WQXGA 180Hz Touch Color : Off Black Part Number : GZ302EA
*Additional 8$ Delivery Fee Outside Beirut Due to The Packaging Size Step into a new level of gaming comfort with the Noblechairs ICON Gaming Chair. This exceptional chair is designed to provide gamers with unparalleled support during extended gaming sessions. To begin with, the ergonomic design of the ICON Gaming Chair ensures optimal posture, reducing the risk of discomfort and fatigue. Its adjustable features cater to individual preferences, allowing you to customize the chair to suit your unique gaming setup. Transition seamlessly between work and play by utilizing the ICON chair’s versatile features. Whether you’re immersed in a gaming marathon or tackling tasks at your desk, the chair’s adaptability enhances both focus and relaxation. Crafted with premium materials, the Noblechairs ICON exudes durability and style. The luxurious padding and high-quality leather or fabric upholstery provide a plush and inviting seat, elevating the overall gaming experience. The ICON Gaming Chair’s 4D armrests and robust reclining mechanism add a layer of functionality, allowing you to find the perfect position for gaming or taking a well-deserved break. Enjoy maximum flexibility without compromising on stability. Investing in the Noblechairs ICON is not just a choice for gaming; it’s a commitment to your well-being. The chair’s lumbar and neck support cushions promote a healthy sitting posture, enhancing your overall comfort during extended sessions. In summary, the Noblechairs ICON Gaming Chair combines style, comfort, and functionality, making it an ideal choice for gamers seeking a premium seating solution. Elevate your gaming experience to new heights with this exceptional gaming chair. Specifications: Material : High Quality Leather Frame : Steel Armrests : 4D With Maximum Adjustability Backrest : Adjustable Angle 90° to 135° Max Load : Up to 150 kg
The MSI Z790 Gaming Plus Wi-Fi Motherboard is built for gamers who demand the best. It offers cutting-edge performance and seamless connectivity to elevate your gaming sessions. Whether you’re building a new PC or upgrading your current setup, this motherboard is a great choice. Equipped with the latest Wi-Fi 6 technology, the MSI Z790 ensures fast and stable wireless connections. Enjoy lag-free online gaming and smooth streaming without interruptions. No more worrying about slow internet speeds. This motherboard supports the latest Intel processors, providing top-notch performance for all your gaming needs. With its robust power delivery system, you can overclock your CPU with confidence. Experience faster load times and smoother gameplay. The MSI Z790 Gaming Plus Wi-Fi Motherboard features PCIe 4.0 slots, offering increased bandwidth for your graphics card and storage devices. This means faster data transfer rates and improved overall performance. Your games and applications will load in no time. Designed with gamers in mind, this motherboard includes advanced cooling solutions to keep your system running smoothly. With multiple fan headers and comprehensive cooling controls, you can maintain optimal temperatures even during intense gaming sessions. The MSI Z790 also boasts immersive audio technology. Experience crystal-clear sound with high-definition audio capacitors and dedicated audio components. Hear every detail and gain a competitive edge in your favorite games. In conclusion, the MSI Z790 Gaming Plus Wi-Fi Motherboard combines high performance, reliable connectivity, and advanced features for an unbeatable gaming experience. Upgrade your rig today and take your gaming to the next level. Specifications: CPU Support : LGA 1700 Storage : 4x M.2 Slot : 3x PCIe x16 Slot, 1x PCIe x1 Slot USB : 8x USB 2.0, 6x USB A 5Gbps, 1x USB A 10Gbps, 1x USB C 10Gbps, 1x USB C 20Gbps Intel Wi-Fi 6E Part Number : 911-7E06-037
HP Mono Laser / A4 Format W1A56A LJ Pro M404dw Speed 38ppm, Res 1200x1200dpi, 1.2GHz proceesor, 256MB Memory, Duplex , Network, E-print, Airprint, USB2.0, Duty Cycle 80,000 pages
Brother ADS-4300N High-speed Network Scanner is a professional desktop scanner designed for business environments. It delivers fast and reliable document digitization. Additionally, it supports network sharing to improve team productivity. Moreover, it scans up to 40 pages per minute and 80 images per minute in duplex mode. It uses a single-pass duplex system for efficient two-sided scanning. Therefore, it helps reduce scanning time for large document batches. It includes an 80-sheet automatic document feeder for continuous scanning. It supports USB 3.0, USB host, and Gigabit Ethernet connectivity. Additionally, it allows scanning directly to network, USB storage, or computer systems. Furthermore, it features advanced image processing and an ultrasonic multifeed sensor. It also includes configurable shortcut buttons for quick task execution. Therefore, it improves workflow efficiency in office environments. In conclusion, Brother ADS-4300N High-speed Network Scanner delivers fast duplex performance, flexible connectivity, and efficient document handling for business scanning needs. Manufacturer Link Specifications: Scans up to 40 ppm and 80 ipm duplex speed 80-sheet automatic document feeder for batch scanning Gigabit Ethernet and USB 3.0 connectivity options 600 x 600 dpi optical scan resolution Ultrasonic multifeed sensor for jam detection and accuracy