128GB SSD Apple Macbook Pro Air 2013 2014 2015 A1502 A1398 A1466 A1465 | Samsung MZ-JPU512T/A06 | 655-1805D ORIGINAL APPLE PART (Apple sources their SSD’s for MacBooks from Samsung) A1502 – A1398 – A1465 – A1466 100% TESTED WORKING Please check compatibility below before you make your purchase: COMPATIBILITY: MacBook Pro Retina Late 2013 – Mid-2015 MacBookPro11,1 (A1502) – ME864LL/A, ME866LL/A, ME867LL/A, MGX72LL/A, MGX92LL/A, & MGXD2LL/A MacBookPro11,2 (A1398) – ME293LL/A & MGXA2LL/A MacBookPro11,3 (A1398) – ME294LL/A, ME874LL/A, MGXC2LL/A, & MGXG2LL/A MacBookPro11,4 (A1398) – MJLQ2LL/A MacBookPro11,5 (A1398) – MJLT2LL/A & MJLU2LL/A MacBookPro12,1 (A1502) – MF839LL/A, MF841LL/A, & MF843LL/A MacBook Air Mid-2013 – Late 2015 MacBookAir6,1 (A1465) – MD711LL/A, MD760LL/A, MD711LL/B, & MF067LL/A MacBookAir6,2 (A1466) – MD760LL/A, MD760LL/B, & MF068LL/A MacBookAir7,1 (A1465) – MJMVM2LL/A MacBookAir7,2 (A1466) – MJVE2LL/A Model Identifier: Samsung Manufacturer Part# MZ-JPU512T/A06
Premium-grade trackpad replacement for MacBook Air 13″ M1 (Model A2338, 2020)—available in Silver and Space Gray—engineered to OEM specifications for flawless Force Touch response, smooth gesture control, and seamless aesthetic integration. Compatible With: MacBook Air 13-inch (2020, Model A2338) with Apple M1 chip. Part Type: Trackpad only—does not include the flex cable, Taptic Engine, or mounting brackets. Designed for professional technicians who will reuse original internal components. Finish Options: Silver: Matches Silver and Starlight MacBook Air finishes. Space Gray: Matches Space Gray and Midnight models for perfect color continuity. Silver: Matches Silver and Starlight MacBook Air finishes. Space Gray: Matches Space Gray and Midnight models for perfect color continuity. Force Touch Capable: Fully supports pressure-sensitive input and haptic feedback when paired with the original Taptic Engine and logic board—no loss of functionality. Precision Craftsmanship: Mirror-polished glass surface with exact curvature, texture, and click mechanism matching Apple’s original design for consistent performance and feel. Installation Requirements: Requires full bottom case disassembly and careful transfer of the original flex cable and Taptic Engine. Adhesive must be applied precisely to maintain structural integrity and sensor alignment. For professional use only.
MacBook Pro A1708 Battery A1713 for MacBook Pro 13 Inch A1708 Late 2016 Mid 2017 (EMC 2978 3164), A2171 Laptop Replacement Battery for MacBook Pro 13 Inch A2159 (2019) A2289 (2020) A2338 (2020) 【Macbook pro 13 Inch battery A1713 & A2171 Battery Specification】– Voltage: 11.4V. Capacity: 54.5Wh / 4781mAh, Battery Type: Li-ion 【Newest 4.0 upgraded OEM Battery for Apple macbook pro】– Japan High Performance Electric Core. Cobalt Proportion: >98%. Upgrade chip. Up to 1500+ recharge cycles over the life of the battery. Overcharger and Discharger Circuit Protection, Ensure fast charges and low power consumption, UL-/CE-/FCC-/RoHS-Certified for safety 【Replacement Battery A1713 for A1708 Macbook pro 13 inch】– A1708 Macbook pro 13” Late 2016: MacBook Pro 13-Inch “Core i5” 2.0 & MacBook Pro 13-Inch “Core i7” 2.4 (MacBookPro13,1, EMC2978, MLL42xx/A, MLUQ2xx/A). — A1708 Macbook pro 13” Mid 2017: MacBook Pro 13-Inch “Core i5” 2.3 & MacBook Pro 13-Inch “Core i7” 2.5 (MacBookPro14,1, EMC3164, MPXQ2xx/A, MPXR2xx/A, MPXT2xx/A, MPXU2xx/A) 【Replacement Battery A2171 for A2159 & A2289 & A2338 Macbook pro 13 inch】– A2159 Macbook pro 13” 2019: MacBook Pro 13-Inch “Core i5” 1.4 Touch & “Core i7” 1.7 Touch (MacBookPro15,4, EMC3301, MUHN2xx/A, MUHP2xx/A, MUHQ2xx/A, MUHR2xx/A, MUHR2xx/B). — A2289 Year 2020: MacBook Pro 13-Inch “Core i5” 1.4 & “Core i7” 1.7 (MacBookPro16,3, EMC 3456, MXK32xx/A, MXK52xx/A, MXK62xx/A, MXK72xx/A). — A2338 Year 2020: MacBook Pro 13-Inch “M1” 8-Core 3.2 (MacBookPro17,1, EMC3578, MYDA2LL/A*)
VSTAR UA80 800VA UPS | Compact Power Backup | 230V Output | Battery Included | For PCs, Routers, POS & More | Universal Outlet Design | Available in Black | Model UPS-U80 Reliable 800VA Power CapacityThe VSTAR UA80 delivers dependable 800VA of backup power—ideal for protecting home or office equipment from sudden power loss and voltage fluctuations. Compact & Efficient DesignSleek and space-saving, this unit fits easily into tight workspaces or under desks without sacrificing performance. Universal Output SocketEquipped with universal-style outlets, allowing compatibility with a wide variety of plugs and devices including PCs, routers, POS systems, and more. Steady 230V OutputProvides consistent 230V output, helping to keep electronics safe during sags, surges, and outages. Easy OperationPlug-and-play functionality with intuitive indicators for power status and battery mode—no complicated setup required. Backup Battery IncludedShips ready to use with internal battery installed. Offers enough runtime to safely power down or continue short-term tasks during outages. Ideal for Light LoadsPerfect for use with routers, modems, home surveillance systems, basic desktops, and point-of-sale devices. Durable Plastic EnclosureBuilt with sturdy, insulated plastic to ensure safety, lightweight portability, and long-term durability. Trusted VSTAR QualityBacked by VSTAR’s reputation for reliability in affordable UPS power protection.
lenovo battery L18C3PF2 Laptop Battery Compatible with Lenovo Ideapad L3-15IML05 L340-15API L340-15IWL L340-17API L340-17IWL L340-15API/L340-15IWL Touch Series 5B10T03401 L18M3PF2 L18L3PF1 L18D3PF1 11.25V 36Wh About this item 【Battery type】Li-ion. Voltage: 11.25V. Capacity: 36Wh 3320mAh . 【Compatible Part Number】L18C3PF2 5B10T03401 5B10W67302 L18M3PF2 5B10T03402 5B10W67367 5B10T03404 L18D3PF1 5B10W67278 5B10T03400 L18L3PF1 5B10W67198 5B10T03403 . 【Replacement For Laptop】Lenovo V155-15API V340-17IWL, IdeaPad L3-15IML05, Ideapad L340-15API L340-15IWL L340-17API L340-17IWL L340-15IWL Touch L340-15API Touch Series Notebook. 【Connector】Before placing your order, Please refer to the picture and check it. Because the products produced by different factories will have differences in size, cable length, interface, etc.
The Cudy WR1300 AC1200 Router delivers fast and stable internet with dual-band WiFi speeds up to 1200Mbps. Designed for home and office use, it features Gigabit ports for high-speed wired connections and reliable coverage for streaming, gaming, and everyday browsing. AC1200 Dual Band WiFi – Combined speeds of up to 1200Mbps (300Mbps on 2.4GHz + 867Mbps on 5GHz) for smooth streaming and online gaming. Gigabit Ethernet Ports – Ultra-fast LAN/WAN ports ensure maximum wired performance for PCs, consoles, and smart TVs. Wide Coverage – Equipped with high-gain antennas to provide strong and stable WiFi signal throughout your home or office. Multiple Operating Modes – Supports Router, Access Point, and Repeater modes for flexible network setup. Easy Setup & Management – Simple web interface for quick installation and control. Secure Connection – Advanced wireless security with WPA/WPA2 encryption to keep your network safe. 1 × Gigabit WAN Port 4 × Gigabit LAN Ports Wi-Fi 2.4GHz & 5GHz Dual Band Ethernet (RJ45) Wireless Security (WPA/WPA2)
Mouschi Field Computer Mouse Pad, Non-Slip Rubber Base and Textured Stitched Edge Mousepads, Mouse Pad Pack for Office and Home Mouschi Field Computer Mouse Pad, Non-Slip Rubber Base and Textured Stitched Edge Mousepads, Mouse Pad Pack for Office and Home Brand: Mouschi Size: Small – 290 X 240 X 3mm Medium – 360 X 300 X 3mm Large – 450 X 400 X 4 mm X-Large – 900 X 420 X 4 mm Color: Black Recommended uses for product: Gaming Material: fabric Mouschi Field Mouse Pad Micro-Weave Fabric: Creates a dense surface for a faster and smoother glide for your mouse. Durable Stitched Anti-Fray Edges: 360° of stitching guards against surface peeling. Staying Power: An anti-skid textured rubber base keeps the mouse pad securely in place even during the most intense gaming sessions. Brand: Mouschi Size: Small – 290 X 240 X 3mm Medium – 360 X 300 X 3mm Large – 450 X 400 X 4 mm X-Large – 900 X 420 X 4 mm Color: Black Recommended uses for product: Gaming Material: fabric
The BYL-2207 2-in-1 LAN adapter provides fast and stable wired internet through a Gigabit Ethernet port using either USB-C or USB 3.0. Perfect for laptops, MacBooks, and PCs without an Ethernet port, it ensures smooth streaming, online meetings, and reliable network performance. The BYL-2207 2-in-1 Type-C / USB 3.0 to Gigabit LAN Adapter is designed for users who need a reliable wired connection on modern laptops and devices. It supports both USB-C and USB 3.0, making it compatible with a wide range of systems including MacBooks, ultrabooks, and desktops. With Gigabit Ethernet speed, it provides faster and more stable internet compared to Wi-Fi, making it ideal for work, gaming, and streaming. 2-in-1 Connector (USB-C + USB 3.0) for wide compatibility Gigabit Ethernet Port (RJ45) for fast and stable wired internet High-Speed Performance supports up to 1000Mbps network speed Plug & Play installation on most systems Compact & Portable Design easy to carry anywhere Ideal for Work & Streaming improves stability for meetings and downloads Reliable Connection reduces lag compared to Wi-Fi Ideal for MacBooks, laptops, ultrabooks, desktops, and tablets that need a stable wired internet connection. Perfect for online meetings, remote work, gaming, IPTV, streaming, and downloading.
Genuine-spec touchpad flex cable for MacBook Pro 13″ (Model A1502, Mid 2014)—restores full trackpad functionality, including precise cursor control and physical click response. Essential for repairing unresponsive or erratic trackpad behavior. Compatible With: MacBook Pro 13-inch (Mid 2014, Model A1502, Model Identifier MacBookPro11,1) with Intel Core i5/i7 processors and Retina display. Part Type: Touchpad flex cable only — does not include the trackpad housing, button mechanism, or mounting hardware. This is the ribbon cable that connects the trackpad to the logic board. Function: Transmits cursor movement and click signals (left/right physical clicks) Supports standard multi-touch gestures (two-finger scroll, tap-to-click, pinch-to-zoom) ⚠️ Note: This model uses a physical click mechanism—not Force Touch (no haptic feedback or pressure sensitivity). Transmits cursor movement and click signals (left/right physical clicks) Supports standard multi-touch gestures (two-finger scroll, tap-to-click, pinch-to-zoom) ⚠️ Note: This model uses a physical click mechanism—not Force Touch (no haptic feedback or pressure sensitivity). OEM-Quality Build: Matches Apple’s original in: Cable length and routing path Connector type and pin alignment Insulation and flexibility for long-term reliability Cable length and routing path Connector type and pin alignment Insulation and flexibility for long-term reliability Common Use Cases: Replacing a torn, frayed, or corroded original flex cable Fixing: Unresponsive or intermittent trackpad Cursor jumping or drifting Click function failure (left or right) Complete trackpad disconnect Replacing a torn, frayed, or corroded original flex cable Fixing: Unresponsive or intermittent trackpad Cursor jumping or drifting Click function failure (left or right) Complete trackpad disconnect Unresponsive or intermittent trackpad Cursor jumping or drifting Click function failure (left or right) Complete trackpad disconnect Installation Note: Requires bottom case removal and battery disconnect. Connects via a ZIF (Zero Insertion Force) socket on the logic board—do not force. Cable routes under the battery; handle with care to avoid strain. Suitable for intermediate to advanced DIYers or technicians. Requires bottom case removal and battery disconnect. Connects via a ZIF (Zero Insertion Force) socket on the logic board—do not force. Cable routes under the battery; handle with care to avoid strain. Suitable for intermediate to advanced DIYers or technicians.
HyperX Pulsefire Core (4P4F8AA) – RGB gaming mouse with PixArt sensor, 6,200 DPI, and 7 programmable buttons.Lightweight, ergonomic design perfect for gamers seeking precision and durability. Model: HyperX Pulsefire Core (4P4F8AA) Sensor Type: PixArt PAW3327 Optical Sensor DPI Range: 800 – 6,200 DPI (adjustable in software) Polling Rate: 1000 Hz Tracking Speed: Up to 220 IPS Acceleration: 30G Buttons: 7 programmable buttons Switch Type: Durable switches rated for up to 20 million clicks Lighting: Customizable RGB lighting (logo zone) Grip Style: Palm or claw grip Design: Ergonomic, right-handed shape with textured side grips Weight: Approx. 87g (without cable) Cable Length: 1.8 meters (braided USB cable) Software Support: HyperX NGENUITY for DPI, RGB, and button customization Compatibility: Windows 10, 8.1, 8, 7
WIWU Hali Laptop Handbag - Water resistance 14" / 15.6" Black WIWU Hali Laptop Handbag – Water resistance 14″ / 15.6″ Black Handbag with many storage compartments The handbag has many storage compartments of different sizes so you can take your laptop, tablet, charging cable, notepad your mouse, and keyboard all with you to school, work, or on your trip. So you have the functionality of the bag. But also a stylish design. The advantages of the laptop bag at a glance: Made from sustainable materials Waterproof Inside length 38 cm Inside width 26.5 cm Inside height 2.5 cm
Smooth, precise, and completely wireless. The Apple Magic Trackpad brings the best laptop navigation to your desktop. Available in both White and Black, it features a large glass surface, Force Touch technology for deeper control, and a modern USB-C port for easy charging. It connects instantly to your Mac or iPad and keeps running for a month or more on a single charge. Make navigating your computer effortless with the Apple Magic Trackpad (A3120). Designed with a wide, smooth glass surface, it lets you swipe, scroll, and zoom using the same natural hand gestures you use on a laptop. It is the perfect tool to keep your desk clean and your workflow productive. Key Features: Force Touch: Built-in sensors know how hard you press, letting you click deeper to open previews, look up definitions, and reveal hidden menus. Large Glass Surface: The spacious edge-to-edge design gives you plenty of room to scroll through large documents or edit photos comfortably. Updated with USB-C: Now features a universal USB-C port for charging and pairing, matching all your modern cables. Long Battery Life: The built-in rechargeable battery lasts about a month or more before needing a quick recharge. Easy Setup: Pairs automatically with your Mac via Bluetooth right out of the box, with no complicated configuration needed. Sleek Colors: Choose between classic White or premium Black to perfectly match your desktop setup. Specifications at a Glance: Model: A3120 Colors: White / Black Connection: Wireless / Bluetooth / USB-C Surface: Premium Edge-to-Edge Glass Compatibility: Mac and iPad
SanDisk 2TB Portable SSD - Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware - External Solid State Drive - SDSSDE30-2T00-G26 SanDisk 2TB Portable SSD – Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware – External Solid State Drive – SDSSDE30-2T00-G26 About this item Solid state performance with up to 800MB/s read speeds in a portable drive. (Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.) Back up your content and memories on a storage solution that fits seamlessly into your mobile lifestyle. Take it with you on your adventures—up to two-meter drop protection means this durable drive can take a beating. (Based on internal testing.) Secure it to your belt loop or backpack for extra peace of mind thanks to the tough rubber hook. From SanDisk, a brand professional photographers trust to take on assignments.
WiWU Minimalist Laptop Handbag – Lightweight, water-resistant bag with soft interior padding, shock protection, and dual compartments.Available in 14″ and 15.6″ sizes, perfect for secure and stylish daily laptop carry. Model: WiWU Minimalist Laptop Handbag Material: Water-resistant polyester exterior with a soft faux-fur padded interior Available Sizes: 14″ and 15.6″ versions to accommodate most laptops Protection: Built-in anti-collision padding and 360° all-around corner protection Compartments: Main laptop compartment (soft-lined) Front organizer section with inner pockets for cables, chargers, phone, and accessories Compartments: Main laptop compartment (soft-lined) Front organizer section with inner pockets for cables, chargers, phone, and accessories Carrying Options: Top handles for hand carry Detachable shoulder strap Luggage strap for trolley attachment Carrying Options: Top handles for hand carry Detachable shoulder strap Luggage strap for trolley attachment Design Features: Durable YKK zippers, reinforced corners, slim profile Weight: Approx. 703 g (14″), 884 g (15.6″) Use Case: Ideal for work, study, travel, and everyday protection of devices
Genuine-spec US layout keyboard replacement for MacBook Pro (Model A1398, Late 2011–Mid 2012)—featuring durable scissor-switch keys, backlighting, and OEM-fit design for reliable typing and straightforward installation. Compatible With: MacBook Pro 13″: Late 2011 (Model A1278, but labeled A1398 in some regions) – Model Identifier MacBookPro8,1 MacBook Pro 15″: Early 2011, Late 2011, and Mid 2012 – Model Identifiers MacBookPro8,2 (15″ early/late 2011) and MacBookPro9,1 (15″ mid 2012) *(Note: “A1398” is primarily associated with the 15″ unibody MacBook Pro with Retina display (Mid 2012), which was the first Retina MacBook Pro.)* This keyboard fits the non-Retina 15″ A1398 (Mid 2012) and compatible Late 2011 models. MacBook Pro 13″: Late 2011 (Model A1278, but labeled A1398 in some regions) – Model Identifier MacBookPro8,1 MacBook Pro 15″: Early 2011, Late 2011, and Mid 2012 – Model Identifiers MacBookPro8,2 (15″ early/late 2011) and MacBookPro9,1 (15″ mid 2012) *(Note: “A1398” is primarily associated with the 15″ unibody MacBook Pro with Retina display (Mid 2012), which was the first Retina MacBook Pro.)* This keyboard fits the non-Retina 15″ A1398 (Mid 2012) and compatible Late 2011 models. Layout: Standard US English (QWERTY) with full-size keys, inverted-T arrow keys, and dedicated function row (F1–F12). Keyboard Type: Traditional scissor-switch mechanism—robust, tactile, and serviceable (pre-Butterfly era). Integrated Features: Backlit keys (adjustable brightness via F5/F6) OEM ribbon cable with ZIF connector Matches original key spacing and actuation force Backlit keys (adjustable brightness via F5/F6) OEM ribbon cable with ZIF connector Matches original key spacing and actuation force Build & Fit: Precision-molded plastic frame with exact screw mounts and alignment pegs—ensures secure, rattle-free installation in the top case. Installation Note: Keyboard is secured with screws and minimal adhesive. Requires full top case access and battery disconnect. Recommended for intermediate to advanced users or technicians.
RK ROYAL KLUDGE RK918 Wired Mechanical Keyboard, RGB Backlit Gaming Keyboard with Large LED Surrounding Side Lamp, Full Size 108 Keys Mechanical 100% Anti-Ghosting Computer Keyboard, Red Switch White About this item 【Full Size 108 Keys & Anti Ghosting Mechanical Keyboard】: 100% percent layout 108 key Mechanical keyboard. All keys do not conflict, ensure that every click is registered, and greatly improve the gaming and typing experience. Press FN and F1~F12 keys could quickly activate the multi-function keys, running for what you demand immediately. It is a great choice as a Christmas gift 【RGB Backlit & LED Surrounding Side Lamp】: The RGB backlight keyboard has more than 20 backlight modes, including interactive backlight, breathing backlight modes, dynamic RGB mode, etc. Besides, there are large LED surrounding side lamps. These all will give you more enjoyable when you gaming or typing at night 【Mechanical Red Switches & Double Shot Keycaps】: Offering linear and quiet typing feedback, smooth top-to-bottom actuation travel distance with shallow sound. If you prefer a quiet environment and a small operating force, red switches are the right choice. Double shot keycap type is produced when two layers of plastic are molded into each other. No printing is necessary. The result is a key legend that will never fade or chip off 【Wide Compatibility & Software Support】: Compatible with Windows, Mac, Linus, etc. The wired connection enables stable transmission without worrying about the impact of the signal. Through RK software, you can customize RGB mode and color, redefine key function, customize macros, and set gaming mode 【Professional and Reliable Service】: RK ROYAL KLUDGE has a professional service team. Over the years, we have kept bringing high-quality products and services to customers, so that we have gained the love and trust of many customers. If you have any questions, you can contact us anytime. RK ROYAL KLUDGE will spare no effort to provide every customer with the best service within 24 hours.
Genuine-spec Touch Bar assembly with integrated flex cable for MacBook Pro 15″ (Models A1706 – 2017 and A1989 – 2018)—fully restores dynamic Touch ID, system controls, and app-specific functions with OEM-level fit and reliability. Compatible With: MacBook Pro 15″ (2017) – Model A1706 (Intel Core i7/i9, 4 Thunderbolt 3 ports) MacBook Pro 15″ (2018) – Model A1989 (Intel Core i7/i9, 4 Thunderbolt 3 ports) MacBook Pro 15″ (2017) – Model A1706 (Intel Core i7/i9, 4 Thunderbolt 3 ports) MacBook Pro 15″ (2018) – Model A1989 (Intel Core i7/i9, 4 Thunderbolt 3 ports) Includes: Complete Touch Bar module with pre-attached flex cable, integrated Touch ID sensor (doubles as power button), and ambient light sensor—ready for direct connection to the logic board. Full Functionality: Restores all Touch Bar features including dynamic app controls, system brightness/volume sliders, Siri, and fingerprint authentication via Touch ID. Color Match: Available in Space Gray and Silver—select the finish that matches your MacBook’s top case. OEM-Quality Build: Matches Apple’s original dimensions, sensor alignment, and surface texture—ensures seamless integration with macOS and consistent responsiveness. Installation Note: Requires full top case disassembly. The flex cable routes under the left speaker and connects near the logic board—precision is critical to avoid damage. Recommended for experienced technicians.
Genuine-spec US layout keyboard replacement for MacBook Pro 13″ (Model A1466, Late 2015–Early 2016)—featuring traditional scissor-switch mechanism, backlighting, and full OEM compatibility for reliable, comfortable typing. Compatible With: MacBook Pro 13-inch non-Touch Bar models: Late 2015 (Intel Core i5/i7, Retina, A1466, Model Identifier MacBookPro12,1) Early 2016 (Intel Core i5/i7, Retina, A1466, MacBookPro13,1) Late 2015 (Intel Core i5/i7, Retina, A1466, Model Identifier MacBookPro12,1) Early 2016 (Intel Core i5/i7, Retina, A1466, MacBookPro13,1) Layout: Standard US English (QWERTY) with full-size keys, inverted-T arrow keys, and dedicated function row (F1–F12). Keyboard Type: Traditional scissor-switch mechanism—not Butterfly or Magic Keyboard—known for durability, deeper key travel, and tactile feedback. Integrated Features: Backlit keys for low-light use, ambient light sensor support, and OEM-style ribbon cable for direct logic board connection. Build & Fit: Precision-engineered to match Apple’s original dimensions and mounting points—ensures flush alignment within the top case and consistent key height. Installation Note: Keyboard is secured with screws and minimal adhesive (unlike later glued models), making replacement more accessible. Still requires full top case disassembly and battery disconnect. Suitable for intermediate to advanced technicians.
Apple MacBook Pro 15” (2018) — professional-grade performance for creative power users.• Intel Core i9 • 32 GB RAM • 500 GB SSD • 4 GB Dedicated GraphicsRetina Display | macOS |
A lightweight and efficient pre-owned Lenovo ThinkPad T14s Gen 2 with 14" display, AMD Ryzen 5 5650U, 16GB RAM, and 256GB SSD—delivering strong performance, all-day battery life, and premium portability for professionals and students.
