Laptop Battery Compatible for A31N1519 Battery for ASUS X540S X540L X540SA X540S X540LA-SI302 A540 F540 R540LA About this item Compatible model no. :- a31n1519, asus x540s x540l x540sa x540s x540la-si302 a540 f540 r540la Warranty not covered if defects due to external causes, accidental, physical or liquid damage, cut, burnt, misuse and missing warranty stickers or labels Battery capacity/power capability (mah/wattage) may be different from the reference picture but a backup of the battery will be the same as the original Please match your product with the image provided before placing the order for any help please get in touch with us.
Experience gaming and entertainment like never before with the ViewSonic 32” 75Hz 2K QHD Monitor. Boasting a spacious screen and crisp resolution, it delivers stunning visuals that immerse you in every detail. Transitioning smoothly between tasks is effortless with this monitor’s 75Hz refresh rate, ensuring fluid motion and responsiveness. Whether you’re gaming, watching videos, or browsing the web, enjoy a seamless experience without lag or stuttering. Additionally, the built-in speakers provide clear and immersive audio to complement the vibrant visuals. Say goodbye to cluttered desk space and external speakers – this monitor offers a streamlined solution for both audio and visual needs. Furthermore, its sleek and modern design adds a touch of elegance to any workspace or gaming setup. With slim bezels and a minimalist aesthetic, the VA3209-2K seamlessly blends into your environment, enhancing the overall look and feel of your space. Moreover, the monitor’s QHD resolution delivers sharp and detailed images, making every scene come to life with clarity and precision. Whether you’re editing photos, watching movies, or gaming, enjoy an immersive viewing experience like never before. In conclusion, the ViewSonic 32” 75Hz 2K QHD Monitor VA3209-2K is a versatile display solution that combines stunning visuals, smooth performance, and immersive audio. Upgrade your viewing experience today and immerse yourself in a world of vibrant colors and crisp details. Specifications: Display : 32″ IPS Resolution : QHD(2560 x 1440) Refresh Rate : 75Hz Response Rate : 4ms
Display Panel Size (inch) : 27 Aspect Ratio : 16:9 Display Viewing Area (H x V) : 597.888 x 336.312 mm Display Surface : Non-Glare Backlight Type : LED Panel Type : IPS Viewing Angle (CR≧10, H/V) : 178°/ 178° Pixel Pitch : 0.311mm Resolution : 1920×1080 Color Space (sRGB) : 100% Brightness (Typ.) : 250cd/㎡ Contrast Ratio (Typ.) : 1000:1 ASUS Smart Contrast Ratio (ASCR) : 100000000:1 Display Colors : 16.7M Response Time : 1ms MPRT Refresh Rate (Max) : 144Hz Flicker-free : Yes Video Feature Trace Free Technology : Yes GameVisual : Yes Color Temp. Selection : Yes(4 modes) GamePlus : Yes HDCP : Yes VRR Technology : FreeSync™ Premium GameFast Input technology : Yes Shadow Boost : Yes Low Blue Light : Yes Audio Feature Speaker : Yes(2Wx2) I/O Ports DisplayPort 1.2 x 1 HDMI(v1.4) x 2 Earphone Jack : Yes Signal Frequency Digital Signal Frequency : HDMI: 30~160 KHz (H) / 48~ 144 Hz (V) DisplayPort: 30~160 KHz (H) / 48~144 Hz (V) Power Consumption Power Consumption : <18W* Power Saving Mode : <0.5W Power Off Mode : <0.3W Voltage : 100-240V, 50/60Hz Mechanical Design Tilt : Yes (+22° ~ -5°) VESA Wall Mounting : 75x75mm Kensington Lock : Yes Dimensions (Esti.) Phys. Dimension with Stand (W x H x D) : 612.6x431x213 mm Phys. Dimension without Stand (W x H x D) : 612.6 x 362.5 x 37.7 mm Box Dimension (W x H x D) : 692 x 499 x 183 mm Weight (Esti.) Net Weight with Stand : 3.9 Kg Net Weight without Stand : 3.5 Kg Gross Weight : 6.1 Kg Accessories (vary by regions) DisplayPort cable HDMI cable Power adapter Power cord Quick start guide Warranty Card 90LM05S1-B01E70 manufacturer link
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.
New A1989 A1990 Keyboard US Standard Replacement for MacBook Pro 13'' 15''A1990 A1989 Keyboard 2018/2019 Year New A1989 A1990 Keyboard US Standard Replacement for MacBook Pro 13” 15”A1990 A1989 Keyboard 2018/2019 Year New A1989 A1990 Keyboard US Standard Replacement for MacBook Pro 13” 15”A1990 A1989 Keyboard 2018/2019 Year We have Perfect after-sales services We share the latest information on laptop spare parts For all our customers. This is NOT an easy job for someone who has no technical skills with Disassembling or Assembling a laptop, So only purchase this item if you know how to install it. Each Keyboard is tested before shipping and working.
The HUAWEI IdeaHub B3 IHB3-65SA is a 65-inch intelligent collaboration device designed for meetings and hybrid workspaces. It combines a 4K interactive display with built-in audio, video, and whiteboard tools for smooth teamwork. Additionally, it supports cloud meetings and wireless sharing for flexible communication. Moreover, it uses a 4K UHD infrared touch screen with low writing latency of about 16 ms. Therefore, users can write and interact smoothly during presentations and discussions. Furthermore, it includes a built-in 4K camera with intelligent tracking. So, it automatically follows speakers and improves video meeting quality. It also integrates multiple microphones and speakers for clear sound pickup and output. In addition, it supports Wi-Fi 6 connectivity and BYOM (Bring Your Own Meeting). Therefore, users can connect their own devices easily and start meetings without extra setup. Also, it runs on Huawei’s collaboration platform with support for cloud meetings, wireless projection, and digital whiteboarding. Overall, the Huawei IdeaHub B3 65-inch delivers an all-in-one meeting solution with smart collaboration tools, strong connectivity, and interactive display performance for modern offices. Specifications: 65-inch 4K UHD infrared touch display Built-in 4K camera with intelligent tracking Low 16 ms writing latency for smooth interaction Wi-Fi 6 support with BYOM connectivity Integrated speakers and multi-microphone system
POUT E3 Angle - Adjustable Angled Ergonomic Laptop Stand Riser - Notebook Computer Holder Compatible w/MacBook Air Pro Dell HP & More 11"-17" Laptops - Foldable & Portable w/ 5 Angles (Silver) POUT E3 Angle – Adjustable Angled Ergonomic Laptop Stand Riser – Notebook Computer Holder Compatible w/MacBook Air Pro Dell HP & More 11″-17″ Laptops – Foldable & Portable w/ 5 Angles (Silver)
Its 31.5″ Rapid VA panel features a 1500R curve for immersive visuals. Plus, Dual‑Mode lets you switch between 4K@160 Hz or FHD@320 Hz resolution easily. Also, the monitor offers a fast 0.5 ms GtG response time to reduce blurring. Because of AMD FreeSync Premium, gameplay stays tear‑free and smooth. Moreover, VESA DisplayHDR 400 enhances contrast and color accuracy. It covers 97 % DCI‑P3, 93 % Adobe RGB, and 136 % sRGB for vivid colors. With HDR and AI Vision tech, dark scene details become clear. Also, it supports HDMI CEC, PIP, and PBP for multi‑device setups. Furthermore, ports include DP 1.4a, two HDMI 2.1, and USB‑C with 15 W PD. Also, anti‑flicker and low‑blue‑light tech reduce eye strain over long sessions. Plus, the frameless design gives a sleek look to your setup. The ergonomic stand adjusts tilt and height up to 130 mm. Moreover, headphone‑out jack adds audio convenience. Because of dual‑mode, you choose either crisp 4K or ultra‑fast FHD. Gamers love the 320 Hz FHD mode for competitive play. Also, movie and design work shine in 4K HDR mode. Additionally, AI Dual‑Mode auto‑switches resolution and refresh rate. Furthermore, build quality feels solid with metal stand and VESA mount. Also, cable routing is tidy despite downward ports. Thus, the MSI MAG 321CUPDF suits high‑end gaming and creative workflows. Upgrade today to enjoy ultra‑fast refresh, vivid visuals, and smooth gameplay. Specifications: Display : 31.5″ Rapid VA Resolution : 3840 x 2160 (UHD) / 1920 x 1080 (FHD) Curvature : 1500R Refresh Rate : 160Hz / 320Hz Response Rate : 0.5ms (GTG)
The AOC Q27G3Z is a high-end 27″ gaming monitor with a QHD resolution of 2560×1440. It uses a Fast IPS panel that delivers excellent color and speed. In addition, it supports a refresh rate of 240 Hz and a response time of 0.5 ms (MPRT) for ultra-smooth gameplay. Its adaptive sync support ensures tear-free visuals during fast action. The AOC Q27G3Z covers wide color gamuts: NTSC 110 %, sRGB 123 %, and DCI-P3 101 %. This makes it ideal not only for gaming but also for content creation. Moreover, it is VESA DisplayHDR 400 certified, so highlights pop and blacks look deeper. The brightness reaches around 400 cd/m², making it suitable in well-lit rooms. Connectivity includes two HDMI 2.0 ports and two DisplayPort 1.4 inputs for flexibility across consoles and PCs. Additionally, the ergonomic stand allows height adjustment, tilt, swivel, and pivot for comfortable viewing in any setup. Its sleek black & red design blends into gaming rigs easily. In short, the AOC Q27G3Z combines speed, clarity and color accuracy in one package. It is a great choice for competitive gamers and creators who want a balanced monitor that handles both performance and visuals well. Check out other option here! Specifications: Display : 27″ Fast IPS Resolution : 2560 x 1440 (QHD) Refresh Rate : 240Hz Response Rate : 0.5ms
Looking to upgrade your gaming setup? The Asus TUF VG279Q1A Gaming Monitor is the perfect solution for an enhanced gaming experience without breaking the bank. First and foremost, indulge in the impressive display quality this monitor offers. With vivid colors and sharp contrasts, your games come to life, providing an immersive and captivating visual feast. The ultra-fast refresh rate ensures smooth and fluid motion, eliminating lag and enhancing your responsiveness during intense gaming sessions. Say goodbye to screen tearing and hello to a competitive edge. Transition seamlessly between tasks with the user-friendly interface. The intuitive controls make adjusting settings a breeze, allowing you to personalize your gaming environment effortlessly. Furthermore connectivity is key, and the Asus TUF VG279Q1A Gaming Monitor delivers. Multiple ports cater to your gaming peripherals, ensuring compatibility with various devices for a versatile gaming setup. Experience comfort during extended gaming sessions with adjustable features. Tilt, swivel, and height adjustments guarantee an ergonomic setup, reducing strain and enhancing your focus on the game. With eye-care technology, this monitor prioritizes your well-being by reducing eye strain and fatigue. Game for hours without compromising on comfort or visual quality. In conclusion, the Asus TUF VG279Q1A Gaming Monitor is a budget-friendly solution that doesn’t compromise on performance. Elevate your gaming setup with its impressive features and enjoy a new level of gaming immersion. Upgrade today! Specifications: Display : 27″ FHD (1920×1080), IPS Refresh Rate : 165Hz Response time : 1ms Part Number : 90LM05X0-B05170
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.
Specification Details Specification Details Input/Output Other Sound Mode Standard Mode Category Speakers Use Home Tweeter Type Cone Control Volume Control, Playback Bluetooth Version 5.0 Input Power (W) <25 W Active Noise Cancellation Passive Voice Control No Output Power Other Waterproof Yes Support APP No Support Memory Card Yes Material Plastic Playback Function MP3, FLAC, ALAC Remote Control No Support Apt-X No Intelligent Personal Assistant Apple’s Siri Display Screen No Built-in Microphone Yes Audio Crossover Full-Range Number of Loudspeaker Enclosure 1 Power Source DC, Battery, USB PMPO 40 W Channels 2 (2.0) Feature Phone Function, Play Video Battery Yes Communication Bluetooth, Audio Line Speaker Type Portable Cabinet Material Plastic Brand Name Bigmzpai Origin Mainland China Bluetooth Version V5.0 Waterproof Level IPX6 Battery Capacity Power Battery 10000mAh Brand YIBOLANG
Genuine Apple MacBook Pro 16″ (A2141) Retina display assembly—professionally removed from original units and tested for full functionality. Ideal for high-quality repairs with true OEM performance and clarity. Model Compatibility: Fits MacBook Pro 16-inch (2019 model, A2141) only. 100% Original Apple Display: Not a copy or aftermarket part—this is an authentic Apple Retina display assembly carefully pulled from used or refurbished MacBook Pro units. Stunning Retina Display: 16-inch LED-backlit screen with 3072 x 1920 resolution, P3 wide color, True Tone technology, and high brightness for crisp, lifelike visuals. Complete Assembly Included: Comes with front glass, LCD panel, integrated 720p FaceTime HD camera, ambient light sensor, and full bezel—ready for installation. Rigorously Inspected: Each unit is tested for dead pixels, backlight uniformity, color accuracy, and physical condition to ensure reliable performance. “Pulled” Condition: Removed from a genuine MacBook Pro—fully functional with OEM quality, but shows signs of prior use (no cracks or major blemishes). Perfect for Professional Repairs: Trusted by technicians and refurbishers who demand factory-level display quality and compatibility.
The Dell OptiPlex 3040 Micro delivers dependable business performance in a compact, energy-efficient design. Featuring an Intel Core i5 6th Gen processor, 8GB DDR3L RAM, and SSD storage options, it is built for smooth multitasking, fast startups, and reliable operation in professional environments.
The Xiaomi TV A 55 2026 delivers sharp 4K visuals ideal for movies, shows, and streaming. Its 55-inch display fills your space with rich detail and vibrant colors. The 3840×2160 resolution brings sharp textures and clear images. This creates a cinematic feel right at home. Moreover, the Xiaomi TV A 55 2026 supports HDR formats such as HDR10 and HLG for improved contrast and lifelike scenes. Bright areas shine, and darks stay deep. This helps scenes look more realistic in films and series. In addition, this model benefits from motion-smoothing via MEMC technology. Fast scenes in sports or action movies stay smooth and fluid. This reduces blur and keeps motion clean. As a result, viewing remains comfortable and enjoyable. Furthermore, the Xiaomi TV A 55 2026 runs on a smart platform powered by Google TV. You can access streaming apps, cast content, or browse channels easily. Also, the TV features dual 10 W speakers with Dolby Audio and DTS-X sound support. Audio comes out clear, balanced, and immersive. In addition, connectivity options include multiple HDMI ports, USB, Wi-Fi, Bluetooth, and Ethernet support. This gives flexibility for consoles, streaming devices, or external drives. Setup remains hassle-free for many use cases. Overall, the Xiaomi TV A 55 2026 offers a strong balance of quality, smart features, and ease of use. It works well for entertainment, streaming, and everyday viewing. This TV is ideal for users seeking a 55″ 4K display with modern smart features at a reasonable price. Specifications: Resolution 4K, 3840 × 2160 Refresh rate 60Hz Speaker 2 x 10W Dimensions including base (L × W × H) 1226*312*770mm Dimensions not including base (L × W × H) 1226*76*711mm CPU Quad cortex A55 GPU Mali-G52 MC1 RAM 2GB ROM 8GB
The MSI MAG 32CQ6F 32″ 180Hz Curved Gaming Monitor delivers an immersive gaming experience. Its 32-inch curved display enhances your field of view, making games feel more engaging and realistic. With a 1500R curvature, it offers a comfortable viewing experience for extended gaming sessions. This monitor features a 180Hz refresh rate, providing ultra-smooth visuals. It reduces motion blur and screen tearing, ensuring a competitive edge in fast-paced games. Combined with a 1ms response time, you get lightning-fast reactions with no ghosting or lag. The MSI MAG 32CQ6F boasts a 2560×1440 (QHD) resolution, offering crisp and detailed visuals. Whether you’re gaming, streaming, or working, the high resolution provides stunning clarity. The VA panel technology ensures vibrant colors and deep contrasts for an immersive viewing experience. With support for AMD FreeSync Premium, the monitor synchronizes with your GPU to eliminate screen tearing and stuttering. This ensures smooth gameplay even during intense action scenes. The monitor also features multiple connectivity options, including HDMI and DisplayPort, making it compatible with various devices. The stylish and modern design of the MSI 32CQ6F complements any gaming setup. Its slim bezels and adjustable stand offer flexibility and comfort. Plus, the anti-flicker and low blue light technology help reduce eye strain, allowing for longer gaming sessions. Upgrade your gaming experience with the MSI MAG 32CQ6F 32″ 180Hz Curved Gaming Monitor, perfect for casual and competitive gamers alike. Specifications: Display : 31.5″ Rapid VA Resolution : 2560 x 1440 (WQHD) Curvature : 1500R Refresh Rate : 180Hz Response Rate : 0.5ms
The Crucial DDR4 32GB laptop memory runs at 3200MHz to deliver faster performance and smoother multitasking. Designed for reliability and compatibility, it’s an ideal upgrade for laptops that need improved speed, responsiveness, and efficiency. The Crucial DDR4 32GB 3200MHz laptop RAM is built for users who want to significantly boost their system’s performance. Whether you’re multitasking, working with heavy applications, or simply looking for a smoother everyday experience, this memory upgrade helps your laptop run faster and more efficiently. 32GB DDR4 Capacity: Provides ample memory for demanding tasks, multitasking, and professional workloads. 3200MHz Speed: Enhances system responsiveness and reduces load times. Laptop Form Factor: Designed specifically for notebooks using DDR4 SODIMM slots. Low Power Consumption: Improves efficiency and helps extend battery life. Wide Compatibility: Tested to work with a wide range of laptop brands and models. Manufactured by Crucial, a trusted Micron brand, this DDR4 memory is built using high-quality components and tested to meet strict reliability standards for long-term performance. With easy installation and a noticeable performance boost, the Crucial DDR4 32GB 3200MHz laptop RAM is a smart and cost-effective upgrade that extends the life and capabilities of your laptop.
The Samsung 77-Inch OLED S90F 4K Vision AI Smart TV | QA77S90FAEXTW is a premium entertainment display that combines OLED picture quality with advanced AI-powered features. Designed for movie enthusiasts, gamers, and streaming fans, it delivers stunning visuals with exceptional color accuracy and contrast. In addition, the large 77-inch screen creates a more immersive viewing experience for any home theater setup. The OLED panel features self-illuminating pixels, and it produces deep blacks with remarkable contrast. As a result, dark scenes appear more detailed while bright highlights remain vivid and realistic. Furthermore, the 4K UHD resolution ensures sharp image quality, making every scene look clear and lifelike. Samsung integrates Vision AI technology into this model, and it intelligently enhances picture and sound performance in real time. Therefore, content appears more refined and optimized regardless of the source. In addition, AI upscaling improves lower-resolution content by bringing it closer to 4K quality. HDR support enhances brightness and expands color depth, so viewers can enjoy more realistic visuals with greater dynamic range. Meanwhile, Samsung’s Smart TV platform provides seamless access to popular streaming services, gaming features, and smart home controls. The slim OLED design adds a premium look to any living space, while the advanced processing technology ensures smooth performance across movies, sports, and games. Overall, the Samsung 77-Inch OLED S90F 4K Vision AI Smart TV offers premium picture quality, intelligent features, and an immersive entertainment experience. Specifications: OLED display technology delivers deep blacks and exceptional contrast 77-inch 4K UHD screen provides immersive large-format viewing Vision AI enhances picture and audio quality in real time HDR support improves brightness, contrast, and color accuracy Smart TV platform offers streaming apps and smart home connectivity
Kingston DataTraveler Exodia (DTX) – Reliable, high-speed flash drive featuring a practical, protective cap design. Delivers USB 3.2 Gen 1 performance for quick and effortless file transfers, ideal for everyday use at work, home, or school. ✅ Full Specifications: Model: Kingston DataTraveler Exodia (DTX/64GB) Interface: USB 3.2 Gen 1 (Backward compatible with USB 3.0 and USB 2.0) Read Speed: Standard USB 3.2 Gen 1 transfer speeds Capacity Options: 64GB / 128GB / 256GB. Material: Durable matte plastic casing Design: Lightweight with a protective cap and a large, color-coded keyring loop (Teal for 64GB) Security/Software: Plug-and-play functionality (No software installation required) Compatibility: Windows 11, 10, macOS (v.10.15.x+), Linux (v. 4.4+), Chrome OS Dimensions: Approx. 67.3 x 21.04 x 10.14 mm Weight: Approx. 11 grams
The Samsung Crystal UHD U8000F 65″ 4K TV UA65U8000FUXTW uses a 65-inch LCD panel with 3840 × 2160 resolution. It delivers standard 4K performance for everyday viewing. Samsung uses the Crystal Processor 4K for image processing and upscaling. As a result, lower-resolution content converts closer to 4K output. In addition, the TV supports HDR10 and HDR10+, which improve contrast between bright and dark scenes. The display runs at a 60 Hz refresh rate. Also, Motion Xcelerator reduces blur in fast motion content such as sports and action. Samsung equips the TV with Tizen OS. Therefore, users access streaming apps, SmartThings features, and basic voice control options depending on setup. Connectivity includes HDMI, USB, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. In addition, the TV supports ALLM for basic gaming response time. This model focuses on 4K resolution, standard HDR support, and essential smart features without advanced gaming or local dimming systems. Specifications: 65-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
