The Alienware AW2724HF 27″ 360Hz Gaming Monitor is built for serious gamers who want speed and clarity. It features a 27-inch Full HD Fast IPS display with sharp visuals and wide viewing angles. With a 360Hz refresh rate via DisplayPort and up to 255Hz through HDMI, the monitor delivers smooth motion in fast-paced games. A 0.5ms response time reduces blur, making every action look sharp and clear. The monitor supports AMD FreeSync Premium and VESA Adaptive-Sync, helping eliminate screen tearing for smoother gameplay. It also covers 99% of the sRGB color range and supports HDR10, offering rich and vibrant visuals. It comes with plenty of ports, including two DisplayPort 1.4, one HDMI 1.4, four USB 3.2 Gen 1 ports, and one USB upstream. This gives you flexible options to connect accessories and gaming gear. The stand is fully adjustable with options to tilt, swivel, pivot, and adjust height for better comfort. It also supports VESA mounting, allowing you to set it up the way you want. The design features thin bezels, making it great for multi-monitor setups. It also includes game-enhancing tools like crosshair overlays and display modes to give players an edge. Overall, the Alienware AW2724HF combines high refresh rates, fast response, and rich visuals in a sleek and adjustable design, perfect for competitive and casual gamers alike. Specifications: Display : 27″ Fast IPS Resolution : 1920×1080 FHD Refresh Rate : 360Hz Response Time : 0.5ms
A compact and powerful pre-owned HP ProBook x360 435 G8 with 13.3" non-touch display, AMD Ryzen 7 5800U, 16GB RAM, and 512GB SSD—offering strong performance and 360° versatility without touch, ideal for professionals and students on the go.
First, it delivers WQHD resolution (2560 × 1440) for sharp, detailed visuals. Also, its 320 Hz refresh rate ensures smooth motion with no visible blur in fast games. Moreover, a rapid 0.5 ms GtG response lets you react instantly during competitive matches. In addition, the monitor uses a Rapid IPS panel for bright, vibrant colors and wide viewing angles. Furthermore, it supports DisplayHDR 400 for enhanced contrast and richer color depth. Another highlight is Adaptive‑Sync, which minimizes tearing and stuttering in fast action. Also, it includes AI Vision tech to boost visibility in dark scenes automatically. The monitor offers HDMI 2.1 and DisplayPort 1.4a ports, making connectivity easy. Plus, its PiP/PbP support lets you view multiple sources at once. Also, the stand allows tilt adjustment from -5° to 20° for user comfort. The slim bezels deliver a sleek, immersive look that fits modern setups. Furthermore, the anti‑glare coating reduces reflections under bright lights. Also, it has headphone‑out support for private audio use. In reviews, users praised its color and speed but noted the stand feels a bit wobbly. Moreover, independent testing confirmed its fast refresh and solid brightness range. In summary, the MSI MAG 275QF X32 delivers pro‑level speed, color, and usability for gamers. Finally, it is ideal for competitive play, esports, and immersive 2K experiences. Specifications: Display : 27″ Rapid IPS Resolution : 2560 x 1440 (WQHD) Refresh Rate : 320Hz Response Rate : 0.5ms (GTG)
The LG UltraWide 34″ 100Hz Curved Monitor offers an expansive 21:9 aspect ratio, providing ample screen space for multitasking and immersive viewing. Its 3440 x 1440 WQHD resolution delivers sharp and detailed visuals, enhancing both productivity and entertainment experiences. Featuring a curved display, this monitor ensures consistent color accuracy and wide viewing angles, making it ideal for creative professionals and gamers alike. The 100Hz refresh rate provides smooth motion, suitable for everyday tasks and casual gaming. Equipped with HDR10 support, the monitor enhances contrast and color range, bringing visuals to life with greater depth and realism. The sRGB 99% color gamut ensures vibrant and accurate colors, essential for photo and video editing. Connectivity options include USB Type-C, HDMI, and DisplayPort, allowing seamless integration with various devices. The USB Type-C port supports data transfer and power delivery, simplifying your workspace setup. The ergonomic stand offers height and tilt adjustments, enabling you to customize the monitor’s position for optimal comfort. Its sleek, virtually borderless design adds a modern touch to any workspace. In summary, the LG UltraWide 34″ 100Hz Curved Monitor combines high-resolution visuals, color accuracy, and ergonomic design, making it a versatile choice for professionals and enthusiasts. Specifications: Display : 34″ VA Resolution : 3440 x 1440 WQHD Refresh Rate : 100Hz Response Rate : 5ms GTG Curvature : 1800R
Size 34″ Display Type IPS Color Gamut (Typ.) sRGB 99% (CIE1931) Color Depth (Number of Colors) 16.7M Pixel Pitch (mm) 0.312 x 0.310 mm Response Time (GTG) 5ms (GtG at Faster), 1ms MBR Refresh Rate 75Hz Aspect Ratio 21:9 Display Resolution UW-FHD Resolution 2560 x 1080 Brightness 400cd/m² Contrast Ratio 1000:1 Viewing Angle 178º (R/L), 178º (U/D) Surface Treatment Anti-Glare INPUT/OUTPUT HDMI Yes x 1 DisplayPort Yes x 1 USB Type-C Yes (DP Alternate Mode) Headphone Out Yes POWER Type Adapter Input 100-240 Vac, 50/60Hz Power Save/Sleep Mode (Max.) Less than 0.5W DC Off (Max.) Less than 0.3W Power Consumption (Typ.) 30W Power Consumption (Max.) 40W SPECIAL FEATURES Color Weakness Mode Yes Adaptive Sync AMD FreeSync™ Black Stabilizer® Yes Dynamic Action Sync® Yes Crosshair® Yes Flicker Safe Yes Smart Energy Saving Yes Reader Mode Yes Super Resolution+ Yes Color Calibrated Yes Dual Controller Yes OnScreen Control (OSC) Yes HDR (High Dynamic Range) HDR10 VESA DisplayHDR™ DisplayHDR™ 400 HDR Effect Yes Auto Input Switch Yes Motion Blur Reduction Technology Yes FreeSync (Low Frame Compensation) Yes 1ms Motion Blur Reduction Yes SOUND Speaker No Built-in Speaker DIMENSIONS/WEIGHTS With Stand (WxHxD) 32.2″ x 22.4″ x 9.4″ (Up), 32.2″ x 18.0″ x 9.4″ (Down) Without Stand (WxHxD) 32.2” x 14.4” x 1.8” Shipping Dimensions (WxHxD) 37.0″ x 20.3″ x 8.6″ With Stand Weight 17.4 lbs Without Stand Weight 13.2 lbs Shipping Weight 24.0 lbs STAND Display Position Adjustments Tilt/Height CABINET/ACCESSORIES Wall Mount Size (mm) 100 x 100 mm HDMI Yes 3 Years Warranty manufacturer link
The Arzopa A1 is an ultra-slim, lightweight 15.6-inch portable monitor engineered for seamless travel productivity and entertainment. Delivering crisp Full HD imagery on a premium IPS panel with integrated eye care features, it provides a hassle-free plug-and-play experience using dual full-function USB-C and Mini HDMI inputs. Complete with a built-in adjustable kickstand, it is the perfect dual-screen companion for laptops, smartphones, and gaming consoles. ✅ Full Specifications: Model: ARZOPA Type-C Portable Monitor (ARZOPA-A1) Interface / Connection: Multi-Port Input Panel: 2 x USB Type-C Full Function Ports (Supports concurrent video transmission, data, and power delivery) 1 x Mini HDMI Port (Video signal input only) 1 x 3.5mm Headphone / Audio Output Interface Interface / Connection: Multi-Port Input Panel: 2 x USB Type-C Full Function Ports (Supports concurrent video transmission, data, and power delivery) 1 x Mini HDMI Port (Video signal input only) 1 x 3.5mm Headphone / Audio Output Interface Performance / Screen Quality: Panel Type: IPS (In-Plane Switching) display with 178° wide viewing angles Resolution: Full HD 1920 x 1080p Refresh Rate: 60Hz Aspect Ratio: 16:9 Brightness: 300 cd/m² Contrast Ratio: 1200:1 Display Colors: 262K (8-bit) Color Gamut: 45% NTSC / 72% sRGB space coverage Performance / Screen Quality: Panel Type: IPS (In-Plane Switching) display with 178° wide viewing angles Resolution: Full HD 1920 x 1080p Refresh Rate: 60Hz Aspect Ratio: 16:9 Brightness: 300 cd/m² Contrast Ratio: 1200:1 Display Colors: 262K (8-bit) Color Gamut: 45% NTSC / 72% sRGB space coverage Display Technology: Features built-in HDR rendering technology to boost dynamic contrast alongside a Low Blue Light comfort filter to reduce eye fatigue. Audio: Dual built-in stereo speakers (1W x 2 configuration). Material & Build: Premium, durable metal housing constructed out of a sleek aluminum alloy framework. Design & Form Factor: Ultra-thin bezel layout boasting an integrated adjustable smart kickstand for multi-angle landscape deployment. Power Setup: Driverless plug-and-play architecture. Operates without an internal battery; runs on host device power distribution via USB-C or requires an external 5V/3A power input adapter. Compatibility: Fully compatible with MacBooks, Windows PCs/Laptops, Chromebooks, USB-C supported Android smartphones, and modern gaming consoles (Nintendo Switch, Xbox Series X/S, PS4, PS5). Dimensions: Approx. 355.6 x 220.9 x 9.14 mm (Ultra-slim 0.36-inch profile) Weight: Approx. 725 to 735 grams (1.6 lbs lightweight chassis)
REMAX RM-C45 Mena Aroma Diffuser Portable Humidifier, Mini Diffuser for Car Home Office Bedroom with Smart Connectivity, Remote Control, Long-Lasting Fragrance and Mesmerizing Starlight Effect, Black About this item Dual Purpose Design: Perfectly suited for both car and home use, this aroma diffuser enhances any space with delightful fragrances, whether you’re on the road or relaxing at home. Starlight Effect: Create a mesmerizing ambiance with the starlight effect, projecting a soothing light pattern that complements your favorite scents for a relaxing experience. Smart Connectivity: Enjoy modern convenience with smart connectivity features that allow you to control the diffuser remotely, ensuring ease of use and customization from anywhere. Long-Lasting Fragrance: Formulated for extended scent release, this diffuser ensures that your environment remains fresh and inviting for hours on end, without the need for constant refills. User-Friendly Remote Control: The included remote control makes it easy to adjust settings and change fragrances without needing to reach the diffuser directly, providing ultimate convenience. Customizable Aromatherapy: Choose from a variety of essential oils or fragrances to create your desired atmosphere, whether you seek relaxation, invigoration, or a fresh ambiance. Compact and Stylish Design: The sleek and modern design fits seamlessly into any decor, enhancing your car’s interior or your home’s aesthetic without taking up too much space. Perfect Gift Idea: A thoughtful gift for friends or family who appreciate home fragrance and wellness, making it a great addition to any special occasion or celebration.
90W AC Charger Fit for Acer Aspire Z 24 Z24-890 Z24-880-UR13 Z22-780 Z24-890-UR11 Z24-890-UA91 Z24-890-UR13 Z24-890-UR16 Aspire 7 A715-76-765N A715-76-73L8 Laptop Adapter Power Supply Cord
The Asus ZenScreen 15.6″ Portable USB Monitor is the perfect solution for productivity on the go. Its slim and lightweight design makes it easy to carry anywhere. Whether you’re working, studying, or gaming, this portable monitor enhances your experience. With a Full HD 1080p display, the Asus ZenScreen delivers crisp and vibrant visuals. The IPS panel ensures wide viewing angles and accurate colors. Enjoy clear images whether you’re indoors or outdoors. Setting up the Asus ZenScreen 15.6″ Portable USB Monitor is simple. It connects via USB-C or USB-A, making it compatible with laptops, tablets, and smartphones. No need for extra drivers or complicated installations. This monitor features an auto-rotating screen, allowing you to switch between portrait and landscape modes. It’s ideal for coding, reading documents, or multitasking efficiently. With TÜV Rheinland-certified Eye Care technology, the Asus ZenScreen reduces blue light and flicker. This helps minimize eye strain, making it perfect for long hours of use. Work or watch comfortably without discomfort. The Asus ZenScreen Portable USB Monitor comes with a foldable smart case that doubles as a stand. Adjust it to different angles for the best viewing experience. The built-in pen hole also lets you prop up the monitor with a pen. Designed for both professionals and casual users, this monitor is a must-have for portable productivity. Stay efficient and expand your screen space wherever you go. Upgrade your workflow today with the Asus ZenScreen 15.6″ Portable USB Monitor. Specifications: Display : 15.6″ IPS Resolution : FHD (1920×1080) Refresh Rate : 60Hz Response Rate : 5ms GTG Interface : USB-C
A powerful pre-owned Dell Precision 7550 mobile workstation with 15.6" display, 10th Gen Core i7, 16GB RAM, 256GB SSD, and NVIDIA Quadro T2000 4GB—built for engineers, designers, and professionals who need certified performance and reliability.
The MSI PRO MP273 27″ FHD Monitor delivers a clear viewing experience with a 27-inch Full HD display. It suits office work and daily tasks well. Moreover, the IPS panel provides consistent colors and wide viewing angles. This helps maintain image quality from different positions. The 75Hz refresh rate ensures smoother visuals during browsing and video playback. A 5ms response time keeps motion clear and stable. It includes HDMI and DisplayPort inputs for flexible connectivity. You can easily connect multiple devices when needed. Additionally, built-in speakers support basic audio use without external devices. The anti-glare screen improves comfort during long sessions. You can also mount it using VESA support to save desk space. The MSI PRO MP273 27″ FHD Monitor offers reliable performance for everyday use. Specifications: 27-inch Full HD (1920 × 1080) IPS display 75Hz refresh rate for smoother visuals 5ms response time (GTG) HDMI and DisplayPort connectivity Built-in speakers with anti-glare screen
Original 12-inch Retina LCD display (Space Gray) for MacBook model A1534, pulled from a working unit. Drop-in replacement for cracked or faulty screens—genuine Apple part, ready to restore visuals. Overview:This is an original Apple Retina display assembly for the 12-inch MacBook (model A1534). It was removed (“pulled”) from a working unit, inspected, and is in usable condition. It’s ideal to replace damaged or failing screens without resorting to aftermarket copies. Key Features & Functionality: Retina resolution with sharp visuals and accurate colors Space Gray color matching original casing Integrated front glass, LCD panel, and display cable assembly Factory-quality optical layers and backlighting Compatible with MacBook A1534 (2015, 2016, 2017) variants Tested for functionality: display, backlight, no dead pixels (unless noted) Requires proper installation (cable alignment, hinge alignment) Detailed Specifications Important Notes & Considerations: Must match A1534 model exactly — other MacBook models won’t be compatible. Compare hinge mounting, cable routing, and connector orientation. Because it’s from a used unit, minor blemishes or microscopic dust may exist; always test before final assembly. Handle with care: the display glass is delicate. Professional installation is recommended unless you’re experienced with MacBook repairs.
The MSI MAG 274QPF E20 monitor delivers sharp visuals and smooth performance for competitive gaming and daily use. It features a 27-inch WQHD display that provides clear detail and consistent colors. Therefore, users can enjoy both immersive gameplay and productive work sessions. Moreover, the 200Hz refresh rate ensures fluid motion during fast-paced action. The fast response time reduces motion blur and ghosting effectively. As a result, players can react quickly and maintain accuracy in competitive scenarios. In addition, adaptive sync technology helps eliminate screen tearing and stuttering. This improves visual stability across different frame rates. The monitor also includes multiple connectivity options, allowing easy connection to gaming systems and PCs. Furthermore, the design focuses on comfort and usability for long sessions. It supports ergonomic adjustments that help users find the ideal viewing position. Consequently, the MSI MAG 274QPF E20 monitor delivers both performance and comfort in one solution. This monitor combines high refresh speed, detailed resolution, and reliable performance. MSI MAG 274QPF E20 monitor is a strong choice for gamers who need smooth visuals and consistent responsiveness. Specifications: 27-inch WQHD (2560 × 1440) display 200Hz refresh rate for smooth gameplay Low response time for reduced motion blur Adaptive sync support for tear-free visuals Multiple connectivity options for flexible setup
The MSI MAG 275QF X24 27″ 240Hz 2K Gaming Monitor offers fast refresh and crisp visuals. Firstly, it features a 27‑inch display with sharp 2560×1440 resolution. Also, the 240 Hz refresh rate guarantees smooth motion in fast games. Moreover, a 1 ms GtG response time delivers quick reaction during intense battles. In addition, it uses an IPS panel for vibrant colors and wide viewing angles. Furthermore, Adaptive‑Sync helps reduce screen tearing and visual stutter. Thus, you get clean and smooth gameplay at all times. Another highlight is the sturdy stand with tilt, height, and swivel adjustments. So, you can find your ideal ergonomic viewing position easily. Also, the monitor includes low‑blue‑light and anti‑flicker tech to protect your eyes. Therefore, long gaming sessions become less tiring and more comfortable. Plus, it offers DisplayPort and HDMI ports for easy multi‑device support. This lets you connect both gaming PC and console without hassle. The MSI MAG 275QF X24 features RGB ambient backlighting to enhance your setup. Hence, it creates an immersive lighting environment behind the screen. Also, the monitor’s slim bezels provide a sleek, modern look. Additionally, its on‑screen display is intuitive and easy to use. Moreover, MSI’s GameSense overlays show real‑time game info like FPS or timers. In short, these features give you an edge in competitive play. Furthermore, Night Vision mode brightens dark in‑game scenes without overexposure. Thus, you can spot enemies clearly even in shadowy maps. Also, the matte screen finish helps cut down glare from room lighting. As a result, you stay focused without distraction. The MSI MAG 275QF X24 delivers top performance at a 240 Hz refresh. To conclude, it is a smart choice for serious gamers seeking speed and quality. Finally, it balances fast gameplay, sharp visuals, and user comfort perfectly. Specifications: Display : 27″ Rapid IPS Resolution : 2560 x 1440 (WQHD) Refresh Rate : 240Hz Response Rate : 0.5ms (GTG)
Searching for a monitor that enhances your productivity and comfort? Look no further than the ViewSonic 24” 60Hz Monitor VG2448. This monitor is your gateway to a superior visual experience. First and foremost, let’s discuss clarity. With its 24-inch screen size, the VG2448 delivers crisp and clear images, ensuring every detail is sharp and vibrant. Say goodbye to eye strain and hello to comfortable viewing. Transitioning to performance, this monitor boasts a refresh rate of 60Hz, providing smooth and fluid visuals for an enhanced viewing experience. Whether you’re working on spreadsheets or watching videos, motion blur will be a thing of the past. Moreover, its ergonomic design offers customizable tilt, swivel, and height adjustments, allowing you to find the perfect viewing angle for maximum comfort. Say goodbye to neck and back strain with this user-friendly monitor. In addition, the VG2448 features a variety of connectivity options, including HDMI, DisplayPort, and VGA, ensuring compatibility with a wide range of devices. Seamlessly connect your PC, laptop, or gaming console with ease. Furthermore, this monitor is equipped with ViewSonic’s exclusive Eye Care technology, which helps reduce eye fatigue during prolonged use. Protect your vision while enjoying extended viewing sessions. In conclusion, the ViewSonic 24” 60Hz Monitor VG2448 is a versatile and reliable choice for both work and entertainment. With its superior clarity, performance, and ergonomic design, it’s sure to enhance your productivity and comfort. Upgrade your viewing experience today and see the difference for yourself. Specifications: Display : 24″ IPS Resolution : FHD (1920×1080) Refresh Rate : 60Hz Response Rate : 5ms GTG
The SAMSUNG 27A804UJN Monitor delivers sharp visuals with 4K UHD resolution and IPS technology. First, it provides accurate colors and wide viewing angles for work and entertainment. The monitor features a 27-inch display, 60Hz refresh rate, and 300 nits brightness. In addition, it includes HDMI and DisplayPort for easy connection to multiple devices. Moreover, the adjustable stand supports height and tilt for better comfort. Therefore, users can enjoy clear images, smooth performance, and a flexible setup for daily use. Specifications: 27″ UHD 3840 x 2160 resolution delivers sharp and detailed images IPS panel provides accurate colors and wide viewing angles 60Hz refresh rate ensures smooth performance for daily tasks HDMI and DisplayPort enable easy connection to multiple devices Height and tilt adjustment improves comfort and viewing position
The MSI PRO MP251L E2 monitor delivers reliable performance for daily work and home use. It features a 24.5-inch Full HD display that provides clear visuals and consistent color quality. Therefore, users can handle tasks like browsing, office work, and media viewing with ease. Moreover, the 120Hz refresh rate improves screen smoothness during scrolling and light gaming. This creates a more comfortable viewing experience over long periods. In addition, the IPS panel ensures wide viewing angles and stable color reproduction from different positions. Furthermore, the monitor supports eye care features that help reduce strain during extended use. This makes it suitable for professionals and students alike. As a result, users can stay productive while maintaining visual comfort throughout the day. The design also focuses on simplicity and efficiency. It includes essential connectivity options for easy setup with various devices. Consequently, the MSI PRO MP251L E2 monitor offers a balanced combination of performance, comfort, and usability. MSI PRO MP251L E2 monitor is a practical choice for users who need smooth visuals and dependable display quality. Specifications: 24.5-inch Full HD (1920 × 1080) IPS display 120Hz refresh rate for smoother visuals Wide viewing angles with consistent colors Eye care technology for reduced strain Multiple connectivity options for easy setup
0G74G Laptop Battery Replacement for Dell Latitude 5300 2-in-1 5310 7300 7400 Series Notebook OG74G 02PFPW 2PFPW 3KF82 8JYHH 11.4V 42Wh 3-Cell About this item Specification: Battery type: Li-ion. Color: Black. Voltage: 11.4V. Capacity: 42Wh/3Cell. New from Manufacturer Replace Part Number: For MXV9V 0G74G 00G74G 2PFPW 3KF82 8JYHH Compatible Models: Replacement for Dell Latitude 5300 E5300 / 5300 2-in-1 / 5310 E5310 / 5310 2-in-1 / 7300 E7300 / 7400 E7400 Series (Important Note: NOT fit for latitude 7400 2-in-1 Series) Note: The Dell laptop models on this product page are compatible with 2 battery models: 0G74G (42Wh 3-Cell 11.4V) , MXV9V(60Wh 4-Cell 7.6V). Please open the back cover of your laptop to check the original battery size and capacity before placing an order. Make sure that the battery model you need is 0G74G (42Wh 3-Cell 11.4V). Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery
A31N1319 A41N1308 A41 Battery for Asus X451 X551 X451C X451CA X551C X551CA X551CA-SX024H X551CA-SX029H X551CA-DH21 X551CA-0051A2117U D550 0B110-00250100 About this item Fully compatible with your original battery, brand new from Professional Manufacturer, CE RoHS certified, grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures safety and stability. Expected operation time: 1.5-3 hours. This may vary depending on the device type and how it is used. Fits models: X451 X551 X451C X451CA X551C X551CA A41 D550 X45li9c X551CA-0051A2117U X551CA-DH21 X551CA-SX024H X551CA-SX029H Compatible Part Numbers 0B110-00250100 A41N1308 A31LJ91 A31N1319 A41N1308 X45LI9C YU12008-13007D YU12125-13002 More Part numbers of compatible batteries and Computers are listed in the Product Description
The Samsung 75″ Crystal UHD U8000F 4K Smart TV UA75U8000FUXTW uses a 75-inch LCD panel with 3840 × 2160 resolution. It is a basic 4K TV focused on screen size, standard image processing, and everyday smart features. It uses the Crystal Processor 4K for image processing and upscaling. This system converts lower-resolution content into closer-to-4K output. It also supports HDR10 and HDR10+, which adjust contrast between bright and dark areas for compatible content. The panel runs at a native 60 Hz refresh rate. Motion Xcelerator is included to reduce blur during fast scenes such as sports and gaming. Samsung Tizen OS powers the smart platform. It provides access to streaming apps, web browsing, and SmartThings connectivity. It also supports voice control depending on region and setup. Connectivity includes HDMI ports, USB ports, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. It supports Auto Low Latency Mode (ALLM) for basic console gaming. This model does not include local dimming or advanced display systems. It focuses on standard 4K performance and basic smart TV functionality for general use. Specifications: 75-inch LCD panel with 3840 × 2160 (4K UHD) resolution Crystal Processor 4K with 4K upscaling support HDR10 and HDR10+ compatibility 60 Hz native refresh rate with Motion Xcelerator Tizen OS with HDMI, USB, Wi-Fi, Bluetooth, Ethernet connectivity
