WiWU S500 Foldable Lightweight Plastic Laptop Stand Description WiWU S500 Foldable Lightweight Plastic Laptop Stand Brand: wiwu Material: ABS+Aluminum alloy Foldable Height Adjustment. Laptop stand with foldable technology, light weight, easy to carry Adjustable from 20 to 40 degrees and height adjustable from 3.15 to 5.12 inches. There are 6 corners Compatible with laptops (11 inch-15 inch) Macbook, iMac, ipad, Microsoft Surface PR, Thinkpad, Lenovo, Dell, HP and more. With anti-slip rubber pad
Genuine-spec touchpad flex cable for MacBook Pro 16″ (Model A2141, 2019, Intel)—essential for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Pro 16-inch (2019, Model A2141) with Intel Core i7/i9 processors (Model Identifier: MacBookPro16,1) (Note: A2141 is the non-base configuration of the 2019 16″ MacBook Pro—typically higher-end Intel models.) Part Type: Touchpad flex cable only—does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits touch coordinates, Force Touch pressure data, and haptic feedback signals—critical for macOS gestures (e.g., Force Click, three-finger lookup, pinch-to-zoom) and Taptic Engine responsiveness. OEM-Quality Construction: Replicated to Apple’s exact specifications—including cable length, connector pitch, EMI shielding, and bend radius—ensuring reliable signal integrity and long-term durability. Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full disassembly of the bottom case, speaker removal, and careful routing beneath the battery and logic board. Connectors use ZIF (Zero Insertion Force) sockets—must be aligned and latched gently. Recommended for certified or professional repair technicians only. Important: This is flex cable only—not a complete trackpad assembly. Must be used with the original or compatible A2141 trackpad and Taptic Engine. Not compatible with M1 MacBook Pro 16″ (A2485), 14″ models (A2442), or any MacBook Air. This is flex cable only—not a complete trackpad assembly. Must be used with the original or compatible A2141 trackpad and Taptic Engine. Not compatible with M1 MacBook Pro 16″ (A2485), 14″ models (A2442), or any MacBook Air. Model Verification: Confirm your device is MacBook Pro A2141 (16″, 2019, Intel) via > About This Mac > Model Identifier (should read MacBookPro16,1).
TE03XL Battery TE03061XL for HP Omen 15-ax000:15-ax033dx 15-ax210nr 15-ax001ns;HP Pavilion 15-bc000:15-bc008tx and More 849910-850 849570-541 542 543 HSTNN-UB7A TPN-Q173-11.55V 61.6Wh 3-Cell About this item Specifications: – Battery type: Li-ion || Voltage: 11.55VV|| Capacity: 61.6Wh || Cells: 3-cell Compatible Models: – HP Omen 15-ax000:(15-ax000~15-ax099);HP Pavilion 15-BC000 Series (15-bc000~099;15-bc300~399) Replacement Part Number: – HP TE03XL HSTNN-UB7A TPN-Q173 TE03061XL 849910-850 849570-541 849570-542 849570-543 3ICP7/65/80Replacment Part Number: – HP TE03XL HSTNN-UB7A TPN-Q173 TE03061XL 849910-850 849570-541 849570-542 849570-543 3ICP7/65/80 Easy Installation: The replacement process is straightforward and provides our tools.
The Cudy WR1200 AC1200 Router offers flexible networking with its 5-in-1 functionality and dual-band WiFi speeds up to 1200Mbps. Ideal for home and office use, it provides stable connectivity, wide coverage, and multiple operating modes to suit different network needs. AC1200 Dual Band WiFi – Combined speeds of up to 1200Mbps (300Mbps on 2.4GHz + 867Mbps on 5GHz) for smooth browsing, streaming, and gaming. 5-in-1 Multi-Mode Functionality – Works as Router, Access Point, Range Extender, WISP, and Client for maximum flexibility. Wide Coverage – High-gain antennas ensure strong and stable WiFi signal throughout your home or office. Fast Ethernet Ports – Reliable wired connections for computers, smart TVs, and other devices. Easy Setup & Management – Simple configuration through an intuitive web interface. Stable Multi-Device Performance – Designed to handle multiple connected devices efficiently. Secure Network – WPA/WPA2 encryption keeps your connection safe and private. 1 × WAN Port 4 × LAN Ports Dual Band WiFi (2.4GHz & 5GHz) Ethernet (RJ45) Wireless Security (WPA/WPA2)
The Genius KM-100SE is a reliable wired keyboard and mouse combo featuring a full-size 104-key layout and USB plug-and-play connection. Ideal for office, business, and everyday home use, it delivers comfortable typing and smooth mouse control with stable performance. The Genius KM-100SE Keyboard & Mouse Combo is a practical and durable solution for users who need dependable performance for daily work. The full-size keyboard offers a comfortable typing experience with a standard layout that’s perfect for productivity, while the wired optical mouse ensures smooth and accurate cursor control. With USB plug-and-play setup, it works instantly with laptops and desktop PCs—no drivers needed. Full-Size 104-Key Keyboard for efficient and comfortable typing Wired USB Connection for stable, lag-free performance Plug & Play Setup – no software or drivers required Comfortable Key Spacing ideal for long office sessions Wired Optical Mouse Included for smooth and accurate tracking Durable Design suitable for daily professional use Ideal for Office & Home – work, study, and general computing Perfect for business offices, schools, home users, and laptop/desktop setups needing a simple, reliable wired keyboard and mouse set. Compatible with most computers supporting USB.
A dependable pre-owned Dell Latitude 5490 with 14" display, 8th Gen Core i5, 16GB RAM, and 512GB SSD—offering strong performance, enterprise security, and durability for business and professional use.
The HyperX Pulsefire Haste 2 Core Wireless is an ultra-lightweight, high-performance gaming mouse designed for speed, precision, and long-lasting comfort. Featuring dual-mode wireless connectivity and an operating weight of just 70 grams, it delivers low-latency competitive gaming powered by a single AAA battery. ✅ Full Specifications: Model: HyperX Pulsefire Haste 2 Core Wireless (White Edition / 8R2E7AA) Interface / Connection: Dual Wireless Connection Modes: High-speed 2.4GHz Wireless (via included USB-A nano receiver) Bluetooth 5.2 (Power-efficient mode for casual use and multi-device pairing) Interface / Connection: Dual Wireless Connection Modes: High-speed 2.4GHz Wireless (via included USB-A nano receiver) Bluetooth 5.2 (Power-efficient mode for casual use and multi-device pairing) Performance & Sensor: Sensor Type: HyperX Custom Core Optical Sensor Max Resolution: Up to 12,000 DPI DPI Presets: 400 / 800 / 1600 / 3200 DPI Tracking Speed: 300 IPS Acceleration: 35G Polling Rate: Up to 1,000Hz (1ms response time) Performance & Sensor: Sensor Type: HyperX Custom Core Optical Sensor Max Resolution: Up to 12,000 DPI DPI Presets: 400 / 800 / 1600 / 3200 DPI Tracking Speed: 300 IPS Acceleration: 35G Polling Rate: Up to 1,000Hz (1ms response time) Switches & Durability: Main Left/Right Switches: Tactile TTC Gold Switches Switch Lifespan: Rated for up to 20 million clicks Total Buttons: 6 programmable buttons (including 2 thumb side buttons) Switches & Durability: Main Left/Right Switches: Tactile TTC Gold Switches Switch Lifespan: Rated for up to 20 million clicks Total Buttons: 6 programmable buttons (including 2 thumb side buttons) Material & Build: Durable solid-upper shell with low-friction PTFE skates for seamless gliding across cloth mouse pads Design & Form Factor: Lightweight, symmetrical ergonomic frame suitable for various grip styles (palm, claw, fingertip) Lighting Effects: Customizable onboard LED RGB lighting Battery & Power: Battery Type: User-replaceable, 1x AAA Alkaline Battery Battery Life: Up to 100 hours (on 2.4GHz mode) or up to 200 hours (on Bluetooth mode) Battery & Power: Battery Type: User-replaceable, 1x AAA Alkaline Battery Battery Life: Up to 100 hours (on 2.4GHz mode) or up to 200 hours (on Bluetooth mode) Security & Software: Fully compatible with HyperX NGENUITY software for button remapping, macro recording, and custom RGB profile management Compatibility: PC, Xbox Series X|S, Xbox One, PlayStation 5 (PS5), PlayStation 4 (PS4), and Mac Dimensions: Approx. 124.3 x 66.8 x 38.2 mm Weight: Mouse Only: Approx. 60 grams Operating Weight (with AAA battery): Approx. 70 grams Weight: Mouse Only: Approx. 60 grams Operating Weight (with AAA battery): Approx. 70 grams
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.
Elevate your game with the Logitech G102, featuring a high-precision 8,000 DPI sensor and vibrant Lightsync RGB lighting. Designed with a classic six-button layout and gaming-grade performance, it offers incredible accuracy and responsiveness for both competitive play and daily productivity. The Logitech G102 is engineered for speed, consistency, and comfort. At its core is a gaming-grade sensor that provides adjustable sensitivity, allowing you to tailor your control to your specific playstyle. Whether you are navigating complex spreadsheets or hitting precise headshots, the G102 delivers a seamless experience with a classic design trusted by gamers worldwide. Gaming-Grade 8,000 DPI Sensor: Experience ultra-precise tracking and consistent responsiveness. The sensitivity is fully adjustable from 200 to 8,000 DPI. Lightsync RGB Color Wave: Choose from vibrant animations or customize your own from approximately 16.8 million colors to match your setup’s aesthetic. Mechanical Spring Button Tensioning: The primary left and right buttons feature a metal spring tensioning system, providing crisp, reliable clicks and a premium feel. Classic 6-Button Design: A familiar, comfortable shape that allows you to play or work for hours without fatigue. Each button can be customized via software for specific in-game actions. On-the-Fly DPI Shifting: Cycle through up to five sensitivity settings with the press of a button, allowing you to switch from precision sniping to rapid movement instantly. Resolution: 200 – 8,000 DPI Connection Type: USB 2.0 (Wired) USB Data Format: 16 bits/axis USB Report Rate: 1000Hz (1ms) Microprocessor: 32-bit ARM Cable Length: 2.1 meters Compatibility: Windows 7 or later, macOS 10.13 or later, ChromeOS Logitech G102 Gaming Mouse User Documentation
Transparent 2.5" USB 3.0 HDD/SSD Enclosure – Supports SATA drives up to 6TB with UASP and tool-free design.Fast, plug-and-play storage case using JMS578 chipset with crystal-clear ABS shell. Transparent 2.5″ USB 3.0 HDD/SSD Enclosure – Supports SATA drives up to 6TB with UASP and tool-free design.Fast, plug-and-play storage case using JMS578 chipset with crystal-clear ABS shell. Model: 2.5″ HDD/SSD Enclosure with JMS578 Chipset Material: Transparent ABS Plastic (durable and lightweight) Interface: USB 3.0 (backward compatible with USB 2.0 & 1.1) Chipset: JMS578 (JMicron) – supports UASP for faster data transfer Drive Compatibility: 2.5″ SATA I/II/III HDD or SSD Supports up to 6TB capacity Fits 7mm or 9.5mm thick drives Drive Compatibility: 2.5″ SATA I/II/III HDD or SSD Supports up to 6TB capacity Fits 7mm or 9.5mm thick drives Data Transfer Rate: Up to 5Gbps via USB 3.0 UASP support enables up to 20% faster transfers (with UASP-enabled OS) Data Transfer Rate: Up to 5Gbps via USB 3.0 UASP support enables up to 20% faster transfers (with UASP-enabled OS) Tool-Free Design: No screws needed – easy slide-in installation Hot Swappable: Plug and play, no drivers needed for most systems LED Indicator: Blue light for power and activity status Operating Systems: Windows 7/8/10/11, macOS, Linux Dimensions: Approx. 125 x 80 x 14 mm Cable Included: USB 3.0 cable (typically 30–50 cm)
External Seagate 2TB/4TB HDD Expansion Portable Drive Easily store and access 2TB/4TB of content on the go with Seagate Expansion Portable hard drive This external hard drive for Windows computers makes backup a snap just drag and drop To get set up, connect the portable hard drive to your Windows computer for automatic recognition no software required This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable Enjoy long term peace of mind with the included one year limited warranty
Professional Lavalier Microphone Candc DC-C6 Candc DC-C6 Lavalier Microphone for Smartphones, DSLR, Camcorders, Audio recorders, PC etc. Clip microphone to help you get music or sound.One-directional microphone with anti-noise function. type jack can be connected to PC / laptop / wireless microphone transmitter with 3.5mm line-in / mic in. Built-in clip can be easily attached to collar, tie or other clothes-no installation required. Features: Type: microphone Cable length: about 116 cm Sensitivity: -46 ± 2db : one way Operating voltage: DC1.0V-10 VAcurrent consumption
VSTAR UA150 1500VA UPS | Simulated Sine Wave Output | 230V | 24VDC Battery System | 50/60Hz Auto Sensing | Compact Design | Black Color | Model UPS-UA150 Robust 1500VA Power CapacityThe VSTAR UA150 delivers 1500VA of reliable backup power to safeguard your essential electronics, including PCs, servers, routers, and security systems. Dual Voltage CompatibilitySupports 110/120V or 220/230/240V input, making it ideal for use in a variety of international voltage environments. Stable 230V Output with AVR FunctionalityMaintains a consistent 230VAC output, protecting connected devices from voltage fluctuations and surges. Simulated Sine Wave OutputProvides a simulated sine wave waveform suitable for most common electronics, especially during normal backup operations. Auto-Sensing FrequencyAutomatically detects 50Hz or 60Hz power sources, adapting to your electrical environment without manual adjustments. Compact, Space-Saving DesignMeasuring just 353 x 149.3 x 162 mm, the UA150 fits neatly on or under desks, in server cabinets, or against walls. Reliable 24VDC Battery SystemOperates on a 24VDC internal battery configuration, delivering longer runtimes and better reliability during outages. Universal Output SocketsEquipped with IEC-style or universal output sockets that are compatible with a wide range of devices. Sleek Black FinishA clean and modern black color allows it to blend seamlessly into professional or home environments. Ideal for Home or OfficeProtects critical electronics, telecom gear, and POS systems from data loss and downtime.
OEM-quality trackpad replacement (without flex cable) for MacBook Pro 13″ (Models A2251 and A2289, 2020) in Silver finish—engineered for precise Force Touch response, smooth multi-touch gestures, and seamless integration with the original chassis. Compatible With: MacBook Pro 13″ (2020, Two Thunderbolt Ports) – Model A2251 (Intel Core i5/i7) MacBook Pro 13″ (2020, Four Thunderbolt Ports) – Model A2289 (Intel Core i5/i7) (Note: Both models share the same trackpad assembly despite port differences.) MacBook Pro 13″ (2020, Two Thunderbolt Ports) – Model A2251 (Intel Core i5/i7) MacBook Pro 13″ (2020, Four Thunderbolt Ports) – Model A2289 (Intel Core i5/i7) (Note: Both models share the same trackpad assembly despite port differences.) Part Type: Trackpad only—does not include the flex cable, Taptic Engine, or mounting hardware. Designed for technicians who will reuse the original internal components. Finish: Silver—matches the Silver MacBook Pro 13″ top and bottom case for perfect aesthetic continuity. Force Touch Support: Fully compatible with pressure-sensitive input and haptic feedback when paired with the original Taptic Engine and logic board—ensuring full macOS gesture functionality (e.g., Force Click, Lookup, Pressure-sensitive drawing). Precision Build: Features the same glass surface texture, curvature, and micro-click mechanism as Apple’s original—delivering consistent tracking accuracy and tactile 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 rigidity and sensor alignment. Recommended for certified or experienced repair technicians only.
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 compatible with both MacBook Air A2179 (Intel, 2020) and A2337 (M1, 2020)—restores full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Air 13″ (2020, Intel) – Model A2179 (Model Identifier: MacBookAir9,1) MacBook Air 13″ (2020, Apple M1) – Model A2337 (Model Identifier: MacBookAir10,1) MacBook Air 13″ (2020, Intel) – Model A2179 (Model Identifier: MacBookAir9,1) MacBook Air 13″ (2020, Apple M1) – Model A2337 (Model Identifier: MacBookAir10,1) ✅ Important Note: Despite different processors (Intel vs. M1), Apple used the same trackpad assembly and flex cable in both A2179 and A2337. This makes the flex cable fully interchangeable between the two models. Part Type: Touchpad flex cable only — does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits: Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original specifications in: Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under the right side of the battery and logic board. Connects via a ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under the right side of the battery and logic board. Connects via a ZIF (Zero Insertion Force) socket—align carefully and latch gently. Recommended for experienced or certified technicians only.
New CM03XL CM03 Laptop Battery for HP Elitebook 740 G2, 745 G2, 750 G2, 755 G2, 840 G1, 840 G2, 845 G2, 850 G1, 850 G2, 855 G2, Zbook 14 G2 About this item 6-cell, Li-ion battery, rated at 4000mAh / 44Wh and 11.1v Replacement HP 717376-001, CM03050XL-PL, E7U24UT, E7U24AA, CM03XL, CM03, 716724-421 Fits HP Elitebook 740 G2, 745 G2, 750 G2, 755 G2, 850 G2, 755 G2. HP EliteBook Folio 9480m. HP Zbook 14. HP Elitebook 850 G1, 1040 G1 Note: As this replacement battery can fit many models and part numbers, the factory can not mark all the compatible part numbers on it, please understand. If you have any problems, please contact us by message, and we will help you deal with them promptly.
A rugged and versatile pre-owned Lenovo ThinkPad T460 with 14" touchscreen, 6th Gen Core i5, 8GB RAM, and 256GB SSD—ideal for professionals who need durability, touch functionality, and reliable business performance.
Arabic Language Silicone Keyboard Cover Skin for MacBook Air 13" Macbook Pro with / without Retina Display 13"15" 17" MC184LL/B, NOT COMPATIBLE WITH NEW MacBook Air 13” A1932 (Black) Arabic Language Silicone Keyboard Cover Skin for MacBook Air 13″ Macbook Pro with / without Retina Display 13″15″ 17″ MC184LL/B, NOT COMPATIBLE WITH NEW MacBook Air 13” A1932 (Black) About this item Only compatible with MacBook Air 13″ (Model: A1369 & A1466) , MacBook Pro 13-Inch with DVD Drive (Model: A1278), Pro 13 inch with Retina Display (Model: A1425 & A1502), Pro 15 inch with DVD Drive (Model: A1286), Pro 15 inch with Retina Display (Model: A1398), Pro 17 inch (Model: A1297) and Apple Wireless Bluetooth Keyboard MC184LL/B (A1314). NOT COMPATIBLE WITH NEWEST MacBook Air 13″ 2018 (Model: A1932) Fit for American Version( “Enter” key is a rectangle), DO NOT FIT FOR Europe Version (“Enter” key looks like “7”) Extra slim silicone skin, made it easier for typing. Soft silicone can ELIMINATE THE SOUND when typing FLEXIBLE, WASHABLE, easy to apply and remove for cleaning or disinfecting. Manufactured to the highest quality available, Ultra thin design lets you open and close your computer without any affection
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.