The LB-LINK AX900 USB WiFi adapter delivers fast and stable wireless connectivity with WiFi 6 technology and speeds up to 900Mbps. Featuring dual-band support (2.4GHz + 5GHz), it’s ideal for upgrading PCs and laptops for smoother streaming, gaming, and online work. The LB-LINK AX900 USB WiFi Adapter is a modern wireless solution designed to upgrade your computer to the latest WiFi 6 (802.11ax) standard. It offers improved speed, better network efficiency, and stronger stability compared to older WiFi adapters. With dual-band support, you can connect to either the 2.4GHz band for long-range stability or the 5GHz band for higher speed and lower latency. Its compact USB design makes it perfect for desktops and laptops needing fast internet without installing internal cards. WiFi 6 (802.11ax) Technology for faster performance and better efficiency AX900 Speed (Up to 900Mbps) for smooth streaming and downloads Dual Band Support: 2.4GHz + 5GHz for flexibility and stability USB Plug & Play easy installation (driver may be required) Low Latency Connection ideal for gaming and video calls Compact Portable Design perfect for laptops and desktops Improves WiFi Performance for weak built-in adapters Ideal for PCs and laptops that need faster WiFi speeds and stronger connectivity. Perfect for online gaming, HD streaming, Zoom/Teams meetings, and stable browsing.
WiWU Linker 721HD Hub – Compact USB-C hub with 7 ports including 100W PD, dual USB-A, USB-C data, HDMI 4K60, and dual SD/TF slots.Aluminum body, plug‑and‑play compatibility with MacBooks and modern USB‑C devices—ideal for laptop expansion. Model: Linker 721HD (WiWU) Material: Aluminum-alloy shell Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Cable: Fixed USB‑C male cable (approx. 15 cm) Compatibility: Plug-and-play with USB-C/Thunderbolt 3/4 devices (MacBook, XPS, Chromebooks, mobile devices with DP-Alt Mode) Design: Compact, space gray finish optimized for travel/work setups Weight: ~150 g
ACER KA220HQbid 21.5″ FHD, HDMI,AMD Freesync VESA 100x100mm Maximum Resolution 1920 x 1080 Colour Supported 16.7 Million Colours Brightness Aspect Ratio 16:9 Response Time 5 ms Backlight Technology LED Horizontal Viewing Angle 90° Vertical Viewing Angle 65° Tilt Angle -5° to 15° Features Flicker-free Features Low Dimming Features Blue Light Speakers No VGA Yes DVI Yes HDMI Yes Operating Power Consumption (Energy Star) 19.50 W Environmental Certification MPR II Package Contents KA220HQ Widescreen LCD Monitor Power Cord 1 x VGA Cable Specifications: ACER KA220HQbid 21.5″ FHD, HDMI,AMD Freesync VESA 100x100mm Maximum Resolution 1920 x 1080 Colour Supported 16.7 Million Colours Brightness 200 cd/m² Technical Information Aspect Ratio 16:9 Response Time 5 ms Backlight Technology LED Horizontal Viewing Angle 90° 1 Year Warranty
The Samsung 55″ QLED Q6F 4K Smart TV QA55Q6FAAUXTW delivers vibrant picture quality and smart entertainment features in a sleek and modern design. It uses advanced QLED technology to produce bright colors, sharp details, and impressive clarity, making movies, sports, and games more enjoyable on the 55-inch screen. QLED technology uses Quantum Dot enhancement to improve color accuracy and brightness. As a result, images appear vivid and lifelike across a wide variety of content. Dark scenes retain important details, while bright scenes remain balanced and clear. This creates a more consistent viewing experience in different lighting conditions. The 4K UHD resolution provides exceptional image detail and clarity. Therefore, content looks sharper and more refined than standard Full HD. In addition, Samsung image processing enhances lower-resolution content, helping it appear closer to native 4K quality. HDR support improves contrast and expands the visible color range. This allows brighter highlights and deeper shadows, creating more realistic images. Fast-moving scenes also appear smoother and clearer, making sports broadcasts and action-packed content more enjoyable. The Smart TV platform provides access to popular streaming services, apps, and connected home features. It offers a responsive interface that makes navigation simple and convenient. In addition, the slim design and narrow bezels give the Samsung QLED 55 Q6F 4K Smart TV QA55Q6FAAUXTW a modern appearance that fits well in bedrooms, living rooms, and entertainment areas. Overall, this Samsung QLED TV combines vivid colors, sharp 4K resolution, and smart functionality for a complete home entertainment experience. Specifications: QLED technology delivers vibrant colors and enhanced brightness 55-inch 4K UHD display provides immersive viewing HDR improves contrast and image realism Smart TV platform supports streaming apps and connected features Slim design complements modern living spaces
AOC Q27P3CW 27″ QHD monitor with webcam delivers a professional workspace solution with sharp visuals, built-in communication tools, and modern connectivity. It is designed for productivity, remote work, and multitasking environments. Additionally, it features a 27-inch QHD IPS display. This display provides 2560 × 1440 resolution, so it delivers clear detail and accurate colors for work and media. Moreover, it includes a 100Hz refresh rate and 4ms response time. As a result, it ensures smooth visuals and responsive performance during daily tasks. The monitor integrates a 5MP webcam with Windows Hello support. Therefore, it enables secure login and high-quality video calls without extra accessories. In addition, it offers USB-C connectivity with power delivery up to 90W. This allows a single cable to handle display, data, and charging for compatible laptops. Furthermore, it includes built-in dual 5W speakers, USB hub, RJ-45 Ethernet, and multiple display outputs. These features improve workspace efficiency and reduce cable clutter. AOC Q27P3CW 27″ QHD monitor with webcam provides a complete all-in-one display solution for professionals who need clarity, connectivity, and integrated communication tools. Specifications: 27-inch QHD IPS display with 2560 × 1440 resolution 5MP webcam with Windows Hello and built-in microphone USB-C with up to 90W power delivery and data transfer 100Hz refresh rate with 4ms response time Built-in dual 5W speakers, USB hub, and RJ-45 connectivity
OEM-quality touchpad replacement for MacBook Air 13.6″ (Model A2681, 2022)—available in Gray, Gold, Silver, and Blue to match your original chassis color. Precision-engineered for seamless Force Touch performance and smooth gesture control. Compatible With: MacBook Air 13.6-inch (2022, Model A2681) with M2 chip—includes all color variants: Space Gray, Gold, Silver, and Midnight Blue. Part Type: Touchpad only—does not include the flex cable, connector, or mounting brackets. Intended for technicians reusing the original cable or transferring it during repair. Color-Matched Finish: Available in all four official A2681 colors to maintain aesthetic consistency with your MacBook’s lower case. Force Touch Support: Full compatibility with Force Touch gestures, haptic feedback, and multi-touch functionality (requires original Taptic Engine and logic board). OEM Build Quality: Matches Apple’s original surface texture, curvature, and responsiveness—ensures consistent click feel and tracking accuracy. Installation Note: Requires careful transfer of the original flex cable and Taptic Engine (if not already attached). Full bottom case disassembly is necessary. Recommended for professional repair technicians.
Compact and stylish with a zinc alloy shell, the SatcOp 8‑in‑1 USB‑C Multiport Dock delivers essential ports—Ethernet, HDMI, USB, card readers, and charging—in one portable adapter. Ideal for powering your laptop while expanding connectivity on the go. 🖥️ HDMI Port – Connect to external displays in Full HD or 4K (depending on your host device). 🌐 RJ45 Ethernet Port – Provides stable wired internet access with gigabit-speed support. ⚡ USB-C PD Charging – Power your laptop while using other ports (up to 87W pass-through). 🔌 USB 3.0 & USB 2.0 Ports – Connect flash drives, external storage, keyboards, and mice. 💾 SD & TF Card Readers – Quick access to camera and device storage cards. 🧊 Material – Premium zinc alloy casing for durability and efficient heat dissipation. 💼 Design – Slim, lightweight, and perfect for travel, home, or office setups. 💻 Compatibility – Works with most USB-C laptops, including Windows, macOS, Chrome OS, and select Android tablets.
The Logitech G515 Lightspeed TKL Wireless Gaming Keyboard is crafted for serious gamers who demand the best in performance and design. Whether you’re into fast-paced action games or strategic battles, this keyboard delivers precision and speed. Featuring Lightspeed wireless technology, the Logitech G515 offers ultra-fast response times, ensuring every keystroke registers instantly. This means you can enjoy lag-free gaming, giving you the competitive edge you need. The TKL (Tenkeyless) design of the Logitech G515 Lightspeed allows for a more compact setup, giving you extra room for your mouse movements. This makes it perfect for gamers who value space and portability without compromising performance. Customizable RGB lighting lets you personalize your gaming setup. With Logitech G HUB software, you can choose from a wide range of colors and effects, syncing them with your in-game actions for an immersive experience. With a battery life of up to 36 hours on a single charge, you can game uninterrupted. When it’s time to recharge, the USB-C connection ensures fast and efficient charging, so you’re back in action quickly. In conclusion, the Logitech G515 Lightspeed TKL Wireless Gaming Keyboard is the ultimate tool for gamers seeking top performance, customization, and portability. Elevate your gaming setup with the G515 today and experience the difference. Specifications: Switch : Low-profile Key Rechargeable Lithium Polymer Battery Battery Life : 36h Weight : 880g Connection : Wired, Wireless Part Number : 920-012423
Acer Nitro VG252QXbmiipx Gaming G-SYNC Screen size 31.5 Inches Display resolution maximum 1920 x 1080 Connectivity technology HDMI Aspect ratio 16:9 Specific uses for product Gaming Response time 4 Milliseconds Resolution FHD 1080p Number of HDMI Ports 2 Image brightness 400 cd/m² Voltage 240 Volts
The ViewSonic VX2480-2K-SHD 24″ 75Hz Monitor elevates your visual experience with its stunning 24-inch display. Whether you’re working, gaming, or watching movies, this monitor delivers crisp and clear images. With a 2K resolution, the ViewSonic VX2480-2K-SHD ensures every detail is visible and vibrant. Enjoy sharp, lifelike visuals that make your content come alive, from photos to videos and everything in between. The 75Hz refresh rate provides smooth and fluid motion, making it perfect for gaming and fast-paced videos. Say goodbye to screen tearing and lag, and enjoy a seamless viewing experience with the ViewSonic VX2480-2K-SHD. Designed for versatility, this monitor offers multiple connectivity options, including HDMI and DisplayPort. Easily connect your devices and switch between them without hassle, making your workspace more efficient. The ViewSonic VX2480-2K-SHD 24″ Monitor features an ultra-slim bezel design, maximizing your screen space and creating a sleek, modern look. Its ergonomic stand allows you to adjust the height and tilt for the most comfortable viewing position. Eye-care technology in the ViewSonic VX2480-2K-SHD reduces eye strain during extended use. With features like Flicker-Free and Blue Light Filter, you can work or play for longer without discomfort. In conclusion, the ViewSonic VX2480-2K-SHD 24″ 75Hz Monitor offers a perfect blend of stunning visuals, smooth performance, and ergonomic design. Upgrade to the ViewSonic VX2480-2K-SHD today and transform your viewing experience. Specifications: Display : 24″ IPS Resolution : QHD 2560 x 1440 Refresh Rate : 75Hz Response Rate : 3.89ms
AOC 20E1H 20-inch LED monitor delivers basic and reliable performance for office tasks, study, and everyday computer use. It focuses on simple display quality, energy efficiency, and stable operation. Additionally, it features a 19.5-inch TN panel with HD+ resolution (1600 × 900). This resolution provides clear text and basic image detail, so it suits productivity and general use. Moreover, it supports a 60Hz refresh rate. As a result, it delivers standard smoothness for everyday tasks like browsing, documents, and video playback. The monitor includes a 5ms response time. Therefore, it handles basic motion cleanly with minimal blur for general usage. In addition, it offers HDMI and VGA connectivity. This allows easy connection to both modern and older PCs. Furthermore, it includes Flicker-Free technology and a VESA mount option. So it improves viewing comfort and gives flexible installation options. AOC 20E1H 20-inch LED monitor provides a compact, efficient, and practical display solution for everyday computing needs. Specifications: 19.5-inch TN panel with 1600 × 900 HD+ resolution 60Hz refresh rate for standard smooth performance 5ms response time for basic motion handling HDMI and VGA connectivity for wide compatibility Flicker-Free technology with VESA mount support
New A1932 A2179 A2337 DC in Power Jack Connector for Macbook Air 13" Type-C USB-C Power 821-01658-A 2018 2019 2020 Year New A1932 A2179 A2337 DC in Power Jack Connector for Macbook Air 13″ Type-C USB-C Power 821-01658-A 2018 2019 2020 Year About this item New A1932 A2179 A2337 DC Jack Power DC-in Board for MacBook Retina 13″ DC Power Jack Board We have good after-sales services. We share the latest information on laptop spare parts in the Chinese market with all our customers. This is NOT an easy job for someone with no technical skills in Disassembling or Assembling a laptop, So only purchase this item if you know how to install it. Each DC Board is tested before shipping and working.
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.
The Lenovo Legion 27Q-10 is a 27-inch 2K gaming monitor designed for competitive and fast-paced gaming. First, its 2560 × 1440 resolution delivers sharp and detailed visuals. The 280Hz refresh rate ensures ultra-smooth motion and responsive gameplay for esports players. In addition, the 1ms response time minimizes ghosting and motion blur. Moreover, adaptive sync technology reduces screen tearing for seamless performance. The slim-bezel design fits neatly into any gaming setup. Furthermore, the adjustable tilt and height options provide ergonomic comfort during long sessions. Finally, the Lenovo Legion 27Q-10 combines 2K clarity, extreme refresh performance, and adaptive sync in one high-end gaming display. Overall, it is ideal for serious gamers and esports enthusiasts seeking competitive advantages. Specifications: 27″ 2560 × 1440 2K resolution 280Hz ultra-fast refresh rate 1ms rapid response time Adaptive sync for tear-free gaming Slim bezel with adjustable ergonomic stand
Philips 24E2N2100 is a 23.8-inch Full HD IPS monitor designed for smooth visuals and accurate color performance. It supports a 1920 × 1080 resolution with a 120Hz refresh rate and 1ms MPRT response time for fast motion clarity. The IPS panel provides wide viewing angles and consistent image quality. Additionally, it includes Adaptive Sync for reduced screen tearing and smoother gameplay. LowBlue Mode and Flicker-Free technology help reduce eye strain during long sessions. Moreover, HDMI 1.4 and VGA connectivity support standard PC and laptop setups. SmartImage presets adjust display settings based on content type. The Philips 24E2N2100 delivers reliable performance for work, media, and casual gaming. It combines IPS color accuracy with high refresh smoothness for everyday use. Specifications: 23.8-inch IPS display with Full HD 1920 × 1080 resolution 120Hz refresh rate for smoother motion performance 1ms MPRT response time for reduced motion blur Adaptive Sync support for tear-free visuals LowBlue Mode and Flicker-Free technology for eye comfort
The MSI MAG 274UPF E2 27″ 160Hz Gaming Monitor delivers an exceptional gaming experience. With a 4K UHD resolution, it offers stunning visuals and sharp details for immersive gameplay. The 160Hz refresh rate ensures smooth and fluid motion, making it perfect for fast-paced games. Equipped with a rapid 1ms response time, the MSI 274UPF E2 minimizes motion blur and ghosting. This feature provides a competitive edge in gaming, ensuring quick reactions and precise accuracy. Whether you’re playing FPS, racing, or RPG games, this monitor delivers outstanding performance. The monitor supports HDR technology, enhancing colors and contrast for a lifelike viewing experience. Dark areas become deeper, and bright areas become more vivid. This makes it ideal for both gaming and content creation. With IPS technology, the MSI MAG 274UPF E2 27″ 160Hz Gaming Monitor offers wide viewing angles and accurate colors. Whether you’re sitting directly in front or off to the side, the colors remain consistent and vibrant. Connectivity is easy with multiple ports, including HDMI, DisplayPort, and USB-C. You can connect your PC, gaming console, or other devices effortlessly. The ergonomic design allows you to adjust the height, tilt, and swivel for maximum comfort. The MSI 274UPF E2 also includes features like anti-flicker and low blue light technology. These features reduce eye strain, allowing for extended gaming sessions without discomfort. Upgrade your gaming setup today with the MSI MAG 274UPF E2 27″ 160Hz Gaming Monitor and enjoy next-level performance and visuals. Specifications: Display : 27″ Rapid IPS Resolution : 3840×2160 (UHD) Refresh Rate : 160Hz Response Rate :0.5ms
Looking to enhance your visual experience? The AOC 22B3HM 21″ 75Hz Monitor is here to elevate your viewing pleasure. With its sleek design and impressive features, it’s the perfect addition to any setup. First and foremost, let’s talk about clarity. The AOC 22B3HM boasts a vibrant 21-inch display that delivers crisp and clear visuals. Whether you’re watching movies, browsing the web, or gaming, every detail will pop with vividness. Transitioning to performance, this monitor offers a smooth and seamless viewing experience with its 75Hz refresh rate. Say goodbye to motion blur and hello to fluid motion, whether you’re scrolling through content or gaming. Moreover, its slim bezel design provides an immersive viewing experience, allowing you to focus entirely on the content at hand. Get ready to dive into your favorite movies and games like never before. In addition, the monitor’s adjustable stand offers ergonomic comfort, allowing you to find the perfect viewing angle for extended use. Say goodbye to neck strain and hello to comfortable viewing for hours on end. Furthermore, with multiple connectivity options, including HDMI and VGA ports, the AOC 22B3HM ensures compatibility with a wide range of devices. Connect your gaming console, PC, or laptop effortlessly and enjoy your content in style. In conclusion, the AOC 22B3HM 21″ 75Hz Monitor is a game-changer in the world of displays. With its stunning visuals, smooth performance, and ergonomic design, it’s the perfect choice for anyone looking to enhance their viewing experience. Upgrade your setup today and immerse yourself in the world of vibrant visuals. Check out other option here! Specifications: Display : 21.5″ VA Resolution : 1920 x 1080 (FHD) Refresh Rate : 75Hz Response Rate : 4ms
The MSI MAG 272URDF E16 27″ UHD, 160 Hz Flat Rapid IPS, 0.5 ms gaming monitor delivers strong performance and sharp visuals for gamers, creators, and everyday users. It is designed to provide fast refresh rates with crisp 4K resolution for smooth action and detailed images. First, this monitor features a 27-inch Rapid IPS panel with a 3840 × 2160 (UHD) resolution that shows rich detail and vibrant colors. As a result, games and media look clear and immersive. In addition, the MSI MAG 272URDF E16 supports up to 160 Hz refresh rate at 4K for smoother motion and reduced blur compared to standard screens. This high refresh rate helps competitive gameplay feel responsive. The 0.5 ms (GtG) response time helps reduce ghosting and motion blur in fast scenes. Therefore, action appears sharper and more accurate during gaming or videos. This monitor also includes Adaptive-Sync to help eliminate screen tearing with compatible GPUs. So, gameplay and graphics feel more fluid. Moreover, the display supports VESA DisplayHDR 400 for better contrast and dynamic range when HDR content is available. As a result, highlights and shadows look more vivid and realistic. The MSI MAG 272URDF E16 provides wide viewing angles of 178° horizontal and vertical, so colors stay accurate even when viewed from the side. This helps when multiple people watch the screen. For connectivity, it includes 2× HDMI 2.1 and 1× DisplayPort 1.4a, allowing 4K at 160 Hz and support for next-gen consoles and PC graphics cards. Thus, you can switch between devices easily. Also, the monitor offers USB ports and a headphone jack for added convenience. This makes connecting peripherals simple. Compared to standard 60 Hz screens, this MSI model delivers smoother motion, higher refresh rates, and sharper details at 4K. So, both gaming and creative work feel more enjoyable. In conclusion, the MSI MAG 272URDF E16 blends 4K clarity, fast refresh, and quick response for strong overall performance. Overall, it is a great option for gamers, content creators, and anyone who wants a premium 4K gaming display. Specifications: Display: 27″ Rapid IPS, Flat, 16:9 aspect ratio, UHD (3840×2160) Resolution :(3840×2160) UHD Refresh Rate : 160Hz Response Time : Response Time: 0.5ms (GtG) for smooth visuals.
The MSI MAG 275QF 27″ 180Hz Gaming Monitor delivers an immersive experience for competitive and casual gamers. With its high refresh rate, it ensures smooth gameplay. This 27-inch gaming monitor features a Fast IPS panel with a 2560 x 1440 (QHD) resolution. The display offers sharp visuals and vibrant colors, enhancing gaming performance. The wide color gamut ensures lifelike images, making every scene more realistic. With a 180Hz refresh rate and 1ms response time, motion blur is minimized. This allows fast-paced action to remain clear and fluid. It gives gamers an advantage in competitive matches, reducing input lag. The MSI MAG 275QF 27″ 180Hz Gaming Monitor supports Adaptive Sync technology. This feature eliminates screen tearing and stuttering for a smooth experience. Whether playing FPS, racing, or RPG games, visuals stay sharp and fluid. It comes with multiple connectivity options, including DisplayPort and HDMI. This ensures compatibility with gaming PCs, consoles, and other devices. The ergonomic stand allows height, tilt, and swivel adjustments for better comfort. With Eye Care technology, the monitor reduces blue light and flicker. This helps minimize eye strain during long gaming sessions. Gamers can enjoy extended playtime without discomfort. The sleek and modern design of the MSI MAG 275QF 27″ 180Hz Gaming Monitor makes it a great addition to any setup. The ultra-thin bezels provide a more immersive viewing experience, perfect for multi-monitor setups. For gamers looking for speed, clarity, and smooth performance, this monitor is an excellent choice. It enhances both gameplay and overall visual experience. Specifications: Display : 27″ Rapid IPS Resolution : 2560×1440 (WQHD) Refresh Rate : 180Hz Response Rate : 0.5ms
Apple 60W MagSafe Power Adapter (for MacBook and 13-inch MacBook Pro) The 60 Watt MagSafe Power Adapter features a magnetic DC connector that ensures your power cable will disconnect if it experiences undue strain and 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 will light up; an amber light lets you know that your portable is charging, while a green light tells you that you have a full charge. An AC lead is provided with the adapter for maximum lead length, while the AC wall adapter (also provided) gives users an even easier and more compact way to travel. Designed to be the perfect travelling companion, the adapter has a clever design that allows the DC cable to be wound neatly around itself for easy cable storage. This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery. Compatible with MacBook and 13-inch MacBook Pro. 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.
