In the realm of monitors, the ViewSonic VG2748 stands out as a powerhouse, offering exceptional visual clarity and a range of features to boost productivity for an enhanced viewing journey. Transitioning to its key features, the VG2748 excels in providing crisp and detailed visuals. This monitor is designed to deliver sharp images and vibrant colors, ensuring a visually engaging experience for work, presentations, or creative tasks. Moreover, this display impresses with its sleek and professional design. The ViewSonic VG2748 not only complements your workspace but also ensures a slim profile and ergonomic stand, allowing for customized and comfortable viewing. In addition to its functionality, the VG2748 offers user-friendly controls and versatile connectivity options, ensuring a seamless and adaptable experience. This monitor effortlessly adapts to various settings, providing flexibility for different work environments. Furthermore, ViewSonic’s commitment to user satisfaction is evident in the VG2748’s advanced ergonomic features and eye-care technology. It’s a reliable companion for extended work sessions, offering both visual excellence and comfort. In conclusion, the ViewSonic VG2748 redefines productivity, combining high-quality visuals, professional design, and user-friendly features. Elevate your work experience effortlessly with the VG2748 – your partner in a seamless and efficient viewing journey! Specification vDisplay Manager SuperClear IPS 178˚/ 178˚ Low Energy Consumption Dual Speakers Refresh Rate : 60Hz Flicker-Free Blue Light Filter ViewMode : Game/Movie/Web/Text/Mono/Mac Ports : 4 USB-A |1 VGA | 1 HDMI | 1 Display Port
LG B2B Monitor 19 inch 19MB15T is designed for business workspaces, POS systems, and daily office use. It features a 19-inch IPS display with touch screen support for simple and responsive operation. Additionally, it uses a compact design that fits small desks and retail counters. Therefore, it works well for offices, shops, and service environments. The LG B2B Monitor 19 inch 19MB15T delivers 1280 × 1024 resolution with a 5:4 aspect ratio and IPS panel technology. Moreover, it includes 250 cd/m² brightness, 14ms response time, and 178° viewing angles for clear display quality. It supports D-Sub input and USB connection for touch functionality. In addition, it includes Reader Mode and built-in power for easier daily use. Furthermore, the monitor supports tilt adjustment from 15° to 68° and VESA 75 × 75 wall mounting for flexible setup. As a result, users can improve comfort and workspace organization. It also helps reduce cable clutter with its built-in power design. Specifications: 19-inch IPS touch screen display 1280 × 1024 HD resolution with 5:4 aspect ratio 250 cd/m² brightness with 178° viewing angle D-Sub input with USB touch connection Tilt adjustment and VESA 75 × 75 mount support
The Samsung 55″ Neo QLED QN85F 4K Vision AI Smart TV QA55QN85FAUXTW delivers a premium viewing experience with advanced Neo QLED display technology and intelligent AI processing. It produces bright, sharp, and detailed images with strong contrast, so movies, sports, and games look clear and immersive on the 55-inch screen. Neo QLED technology uses Quantum Mini LEDs to improve brightness control and contrast accuracy. As a result, dark scenes appear deeper while bright scenes stay vivid and balanced. This creates a more realistic picture across different types of content. Vision AI enhances picture and sound in real time. It analyzes each scene and automatically adjusts brightness, sharpness, and color for better output. Therefore, the TV consistently delivers optimized visuals without manual settings. In addition, AI upscaling improves lower-resolution content closer to 4K quality. HDR support expands brightness range and color depth, making visuals more dynamic and lifelike. Fast motion handling also improves clarity, which enhances sports and action viewing. The Smart TV platform provides easy access to streaming apps, gaming features, and smart home controls. It runs smoothly and responds quickly between apps. In addition, the slim design with thin bezels gives the TV a modern and premium look. Overall, this Samsung Neo QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful entertainment experience. Specifications: Neo QLED technology delivers bright and detailed picture quality 55-inch 4K display provides immersive viewing experience Vision AI enhances picture and sound automatically HDR improves contrast, brightness, and color depth Smart TV platform supports apps, streaming, and smart features
The Samsung Crystal UHD U8000F 50″ 4K Smart TV UA50U8000FUXTW uses a 50-inch LCD panel with 3840 × 2160 resolution. It delivers standard 4K output for everyday viewing, streaming, and console use. Samsung uses the Crystal Processor 4K for image processing and upscaling. As a result, lower-resolution content converts closer to 4K quality on the display. In addition, the TV supports HDR10 and HDR10+, which improve contrast between bright and dark areas for compatible content. The display runs at a 60 Hz refresh rate. Also, Motion Xcelerator reduces blur during fast motion scenes such as sports and action content. Samsung equips the TV with Tizen OS. Therefore, users access streaming apps, SmartThings integration, and smart features through a responsive interface. Connectivity includes HDMI ports, USB ports, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. In addition, the TV supports ALLM for basic console gaming responsiveness. This model focuses on 4K resolution, standard HDR performance, and essential smart TV features without advanced gaming or local dimming technology. Specifications: 50-inch LCD panel with 3840 × 2160 4K UHD resolution Crystal Processor 4K with upscaling support HDR10 and HDR10+ compatibility 60 Hz refresh rate with Motion Xcelerator Tizen OS with HDMI, USB, Wi-Fi, Bluetooth, Ethernet connectivity
Apple MacBook Pro 16” (2019) — professional-grade power and stunning Retina display.• Intel Core i9 • 32 GB RAM • 500 GB SSD • 4 GB Dedicated GraphicsRetina Display | macOS |
The ACER Nitro ED320QR 32″ Monitor delivers immersive and smooth visuals for gaming, work, and entertainment. It features a 32-inch Quad HD display that shows crisp details and vibrant colors. Moreover, its high refresh rate ensures fluid motion during fast-paced games and videos. This monitor uses a VA panel for strong contrast and wide viewing angles. Additionally, the fast response time reduces blur and ghosting during competitive gaming. The anti-glare screen minimizes reflections in bright rooms. HDMI and DisplayPort inputs allow easy connection to PCs, laptops, and consoles. Furthermore, tilt adjustment helps you find a comfortable viewing angle during long sessions. Low blue light and flicker-free technologies reduce eye strain during extended use. This display is suitable for gamers, professionals, and home users alike. Therefore, it supports gaming, multimedia, and productivity tasks. Finally, it combines sharp visuals, smooth performance, and comfort features for daily use. Specifications: Screen Size: 32″ Quad HD VA panel Resolution: 2560 × 1440 Refresh Rate: High for smooth motion Ports: HDMI + DisplayPort Features: Anti-glare, low blue light, flicker-free eye care
The MSI MAG 244F 24″ 200 Hz Gaming Monitor delivers smooth visuals with super‑fast refresh rate. It features a full HD (1920×1080) IPS panel for vivid colors and wide viewing angles. Moreover, its 1 ms MPRT response time reduces motion blur during fast-paced gameplay. Also, the 200 Hz refresh rate ensures fluid motion in competitive games. In addition, the monitor supports Adaptive‑Sync to eliminate screen tearing and stutter. Besides that, the slim bezel design creates an immersive multi‑monitor setup. Furthermore, the adjustable stand allows tilt, height, and swivel customization. Therefore, users can find a comfortable viewing position effortlessly. It includes DisplayPort and HDMI inputs for flexible connectivity. Also, built‑in gaming presets offer easy optimization for different game genres. Plus, MSI’s Anti‑Flicker and Less Blue Light technologies reduce eye strain. Meanwhile, the monitor uses a VESA mount for wall or arm installation. Importantly, the sturdy stand delivers stable support during intense gaming sessions. Also, on‑screen crosshair overlays enhance accuracy in FPS games. Unlike standard monitors, this one targets e‑sports and fast‑reaction players. However, it still works well for streaming, editing, and productivity tasks. For example, racing, shooter, or fighting games feel more responsive and clear. Then, users connect cables, power on, and enjoy lag‑free visuals instantly. Moreover, the ergonomics support comfort during long gaming or desk sessions. As a result, performance gains combine with healthy posture support. Also, the display’s vivid contrast keeps dark and bright details visible. In addition, its low input lag provides competitive advantage in fast games. Therefore, gamers stay ahead with accurate and real‑time feedback. Also, the monitor’s sleek black design complements any gaming setup. Furthermore, MSI’s reliable build quality offers long‑term durability. Consequently, users gain both style and substance in one package. Also, all essential cables come in the box for easy setup. In conclusion, the MSI MAG 244F offers 200 Hz speed, IPS clarity, and gaming comfort. Finally, it’s a smart investment for serious gamers seeking fluid performance. Specifications: Display : 23.8” Rapid IPS Resolution : 1920 x 1080 (FHD) Refresh Rate : 200Hz Response Rate : 0.5ms
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
Dell 19.5V 4.62A 90 Watt Replacement Laptop Adapter/Charger New Small Pin 4.5 x 3.0 mm for Dell Latitude 3500 3379 3400 3301 3590 3490 7370, RWHHR, 450-AECO (Power Cord Included)
The ViewSonic XG2409 24″ 180Hz Gaming Monitor is built for smooth and responsive gaming performance. With a fast 180Hz refresh rate, it delivers fluid visuals and reduced motion blur, ideal for action-packed games. Its 1ms MPRT response time ensures clear images with minimal ghosting or lag. The SuperClear® IPS panel offers rich colors and wide viewing angles, making every scene vivid and immersive. The ViewSonic XG2409 24″ 180Hz Gaming Monitor features AMD FreeSync™ support, which helps prevent screen tearing and stuttering during gameplay. HDR10 support boosts contrast and detail, offering more lifelike visuals. The Full HD resolution (1920 x 1080) produces sharp and detailed images for gaming, movies, and work. With 250 nits brightness and a 1,000:1 contrast ratio, it maintains clarity even in brighter environments. Connectivity is simple with two HDMI 1.4 ports and one DisplayPort 1.2, giving you flexibility with multiple devices. It also includes a 3.5mm audio output for easy audio integration. Designed with comfort in mind, the monitor stand is adjustable for height, tilt, swivel, and pivot, helping you find the perfect viewing angle. It also supports VESA mounting for custom setups. The anti-glare coating helps reduce screen reflections, making it easier to focus on your game. Its clean, minimal design blends well with any gaming or home office setup. In conclusion, the ViewSonic XG2409 24″ 180Hz Gaming Monitor offers smooth visuals, fast response, and ergonomic features, making it a great choice for gamers who want performance and value. Specifications: Display : 24″ IPS Resolution : 1920 x 1080 FHD Refresh Rate : 180Hz Response Rate : 1ms MPRT
A high-efficiency pre-owned HP EliteBook 865 G9 with 16" display, AMD Ryzen 7 6850U, 16GB RAM, 512GB SSD, and integrated AMD Radeon 680M graphics—ideal for business professionals seeking all-day battery life, strong performance, and enterprise security.
Genuine-spec touchpad flex cable for MacBook Pro 15″ (Model A1990, 2018–2019, 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 15-inch (2018 & 2019, Model A1990, Model Identifiers MacBookPro15,2) with Intel Core i7/i9 processors. 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 unusable 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 unusable Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under internal components near the right speaker and logic board. Connects via a ZIF (Zero Insertion Force) socket—must be aligned carefully and latched gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under internal components near the right speaker and logic board. Connects via a ZIF (Zero Insertion Force) socket—must be aligned carefully and latched gently. Recommended for experienced or certified technicians only.
Original MacBook Pro 13″ (A2338) Display Assembly in Silver, including LCD, Retina panel, backlight, camera, Wi-Fi antennas, hinges, and aluminum lid. Compatible with M1 MacBook Pro 13″ (2020). Ideal for replacing cracked, damaged, or faulty screens. ✔️ Complete Display Assembly: Includes LCD, digitizer, housing, hinges, webcam, and antenna modules. ✔️ Retina Resolution: 2560 × 1600 native resolution with True Tone support. ✔️ Genuine Fit for A2338: Designed specifically for the MacBook Pro 13″ (A2338) – M1 2020 model. ✔️ Accurate Color & Brightness: 500 nits brightness, P3 wide color gamut, and high contrast. ✔️ Silver Aluminum Finish: OEM-grade aluminum lid matching the original color and texture. ✔️ Plug-and-Play Replacement: No programming required — direct connector compatibility. ✔️ Ideal for Repair: Suitable for replacing damaged, flickering, bleeding, or cracked screens.
The MSI MAG 274QRFW E20 White Gaming Monitor is built for competitive gaming and immersive entertainment. It features a 27-inch Rapid IPS panel with WQHD (2560×1440) resolution, delivering sharp visuals, wide viewing angles, and accurate colors. In addition, the monitor offers a 200Hz refresh rate and an ultra-fast 0.5ms (GtG) response time. Therefore, it produces smooth gameplay with reduced motion blur in fast-paced games. Moreover, it supports NVIDIA G-SYNC Compatible and AMD FreeSync Premium technologies. As a result, gameplay stays fluid while minimizing screen tearing and stuttering. The DisplayHDR 400 certification also improves contrast and highlights for more lifelike visuals. The monitor includes DisplayPort 1.4a, dual HDMI 2.0b ports, and a headphone output for flexible connectivity. In addition, its ergonomic stand supports height, tilt, swivel, and pivot adjustments for comfortable viewing. Finally, the MSI MAG 274QRFW E20 combines high refresh rates, vibrant colors, and ergonomic flexibility, making it an excellent choice for competitive gamers and content creators. Specifications: Display: 27″ Rapid IPS WQHD (2560×1440) Refresh Rate: 200Hz with 0.5ms (GtG) response time HDR: VESA DisplayHDR 400 certified Sync Technology: NVIDIA G-SYNC Compatible & AMD FreeSync Premium Connectivity: DisplayPort 1.4a, 2× HDMI 2.0b, Headphone Out
0G74G Laptop Battery Replacement for Dell Latitude 5300 2-in-1 5310 7300 7400 Series Notebook OG74G 02PFPW 2PFPW 3KF82 8JYHH 11.4V 42Wh 3-Cell About this item Specification: Battery type: Li-ion. Color: Black. Voltage: 11.4V. Capacity: 42Wh/3Cell. New from Manufacturer Replace Part Number: For MXV9V 0G74G 00G74G 2PFPW 3KF82 8JYHH Compatible Models: Replacement for Dell Latitude 5300 E5300 / 5300 2-in-1 / 5310 E5310 / 5310 2-in-1 / 7300 E7300 / 7400 E7400 Series (Important Note: NOT fit for latitude 7400 2-in-1 Series) Note: The Dell laptop models on this product page are compatible with 2 battery models: 0G74G (42Wh 3-Cell 11.4V) , MXV9V(60Wh 4-Cell 7.6V). Please open the back cover of your laptop to check the original battery size and capacity before placing an order. Make sure that the battery model you need is 0G74G (42Wh 3-Cell 11.4V). Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery
Genuine Apple sleep/wake sensor flex cable (Hall effect sensor) for MacBook Air 13.6″ (Model A2681, 2022, M2)—ensures automatic display sleep when the lid is closed and wake-on-open functionality. OEM part number 821-04129-02. Compatible With: MacBook Air 13.6-inch (2022, Model A2681) with Apple M2 chip (all colors: Silver, Space Gray, Starlight, Midnight). Apple Part Number: 821-04129-02 (exact OEM service part). Function: Contains the Hall effect sensor that detects the magnet in the MacBook Air’s display lid. This allows macOS to: Sleep the system when the lid is closed Wake instantly when opened Prevent false sleep/wake events during use Sleep the system when the lid is closed Wake instantly when opened Prevent false sleep/wake events during use Location: Mounted near the right side of the keyboard, adjacent to the battery and logic board. Common Failure Symptoms: MacBook doesn’t sleep when lid is closed MacBook wakes randomly in a bag “Lid closed” not recognized in macOS Requires manual sleep or power button use MacBook doesn’t sleep when lid is closed MacBook wakes randomly in a bag “Lid closed” not recognized in macOS Requires manual sleep or power button use Part Type: Flex cable with integrated Hall sensor—not just a cable, but a calibrated magnetic sensor module. Installation Note: Requires full bottom case removal and careful disconnection of the battery. The sensor is adhered near the I/O area—do not bend or puncture. Recommended for experienced technicians.
The MSI PRO MP252L features a 25-inch Full HD IPS display with a smooth 120Hz refresh rate and 1ms MPRT response time. Equipped with HDMI and DisplayPort connectivity plus eye-care technology, it’s ideal for productivity, study, and everyday use. The MSI PRO MP252L is a professional-grade monitor designed for office work, learning, and home use. Its 25-inch Full HD IPS panel delivers sharp visuals and accurate colors, while the 120Hz refresh rate ensures smoother scrolling and motion. With versatile connectivity options, it easily integrates into modern and legacy setups. 25” Full HD Display (1920×1080): Clear and detailed visuals for work and entertainment. IPS Panel Technology: Wide viewing angles and consistent color accuracy. 120Hz Refresh Rate: Smoother visuals compared to standard 60Hz monitors. 1ms MPRT Response Time: Reduces motion blur for improved clarity. Eye Care Technology: Anti-Flicker and Less Blue Light reduce eye strain. 1× HDMI Port: Easy connection to laptops, desktops, and media devices. 1× DisplayPort: Stable and high-quality video signal for modern systems. Headphone Out: Convenient audio output for headphones or external speakers. Built with MSI’s trusted quality standards, the PRO MP252L features a durable yet sleek design that fits perfectly in professional and home environments.
TP-Link AC1200 Archer C50 Wireless Dual Band Router Support smooth 4K streaming with AC1200 Wi-Fi 4 external antennas provide stable wireless connections and optimal coverage Easy network management at your fingertips with TP-Link Tether Supports IGMP Proxy/Snooping, Bridge, and Tag VLAN to optimize IPTV streaming Supports Access Point mode to create a new Wi-Fi access point TP-Link AC1200 Archer C50 Wireless Dual Band Router Support smooth 4K streaming with AC1200 Wi-Fi 4 external antennas provide stable wireless connections and optimal coverage Easy network management at your fingertips with TP-Link Tether Supports IGMP Proxy/Snooping, Bridge, and Tag VLAN to optimize IPTV streaming Supports Access Point mode to create a new Wi-Fi access point TP-Link Archer C50 – AC1200 Wireless Dual Band Router Wireless Speed: Up to 1200 Mbps (300 Mbps on 2.4GHz + 867 Mbps on 5GHz) Wi-Fi Standard: 802.11ac – 3x faster than wireless N speeds Bands: Dual Band (2.4GHz & 5GHz) for reduced interference and better performance Antenna: 4 External Antennas for strong and stable wireless coverage Ports: 4× LAN, 1× WAN (10/100 Mbps) Advanced Features: Parental Controls, Guest Network, IPv6 Support, Access Control Security: WPA/WPA2 encryption for secure wireless connections Ease of Use: Easy setup with TP-Link Tether App Ideal For: HD streaming, online gaming, and high-speed downloads in homes and small offices
Are you ready to take your gaming to the next level? Look no further than the Asus VG279Q3A 27″ 180Hz Gaming Monitor. With its advanced features and cutting-edge technology, this monitor is designed to deliver an immersive gaming experience like no other. Firstly, let’s talk about the impressive display. With a 27-inch Full HD panel, you’ll enjoy crisp, clear visuals with vibrant colors and sharp details. Whether you’re exploring vast open worlds or engaging in intense battles, every moment will come to life on this stunning screen. Moreover, the 180Hz refresh rate ensures smooth and fluid gameplay, allowing you to react quickly to every movement with precision and accuracy. Say goodbye to motion blur and screen tearing, and hello to seamless gaming sessions that keep you on the edge of your seat. In addition, the Asus VG279Q3A features Adaptive-Sync technology, which eliminates stuttering and tearing for a smoother gaming experience. Whether you’re playing fast-paced shooters or immersive RPGs, you’ll enjoy tear-free gameplay without any distractions. In conclusion, if you’re looking for a gaming monitor that delivers exceptional performance and immersion, the Asus VG279Q3A 27″ 180Hz Gaming Monitor is the perfect choice. Immerse yourself in stunning visuals, fluid gameplay, and unparalleled gaming excellence. Specifications: Display : 27″ IPS Resolution : 1920×1080 Refresh Rate : 180Hz Response Rate : 1ms
The ViewSonic VA2730-4K-HD 27″ UHD 60Hz Monitor delivers crisp, detailed 4K visuals for work, media, and creative projects. Its UHD resolution shows sharp text, images, and video with clear clarity. The 27‑inch screen gives you plenty of space for multitasking and large spreadsheets. Moreover, the ViewSonic VA2730-4K-HD uses a quality IPS panel that gives wide viewing angles and consistent colors from any seat. Colors stay accurate even when you look off‑center. This makes photos, designs, and movies appear vibrant and natural. In addition, the monitor supports HDR10 for improved contrast and more realistic visuals. It also includes anti‑glare coating and a blue‑light filter to protect your eyes during long use. These features help reduce eye strain when you work or binge‑watch for hours. Furthermore, the ViewSonic VA2730-4K-HD 27″ UHD 60Hz Monitor offers simple connectivity with HDMI and DisplayPort. You can connect laptops, desktops, or consoles easily. The plug-and-play setup makes it ready fast, without fuss. Also, the monitor’s design is modern and slim. The thin bezel gives a clean look that suits offices, home desks, or studios. The stand tilts slightly to help you get a comfortable viewing angle. The build feels solid and reliable for daily use. Overall, the ViewSonic VA2730-4K-HD 27″ UHD 60Hz Monitor blends high resolution, vivid color, and usability in one versatile screen. It enhances productivity, creative work, and entertainment. It is ideal for professionals, media fans, and casual users who want a clear, quality display. Specifications: Display : 27″ IPS Resolution : UHD 3840×2160 Refresh Rate : 60Hz Response Time : 4ms
