Acer V227Q BIV Monitor Aspect Ratio 16:9 MasterFormat® Number 11 28 00 Model Number *227Q Power Supply No Screen Size (in.) 21.5 3 Years Warranty
BenQ MOBIUZ EX2710 27″ Display Screen Size 27 inch Panel Type IPS Backlight Technology LED backlight Resolution (max.) 1920×1080 Brightness (typ.) 350 nits Brightness (peak)(HDR) 400 nits HDR HDR10 Native Contrast 1000:1 Viewing Angle (L/R) (CR>=10) 178°/178° Response Times (GtG) 2 ms Response Times (MPRT) 1 ms Refresh Rate (Hz) 144 Color Gamut 99% sRGB Color Mode Cinema HDRi, ePaper, FPS, Game HDRi, HDR, M-Book, Racing game, RPG, sRGB, Standard Aspect Ratio 16:9 Display Colors 16.7 million color PPI 82 Display Screen Coating Anti-Glare Color Temperature Bluish, Normal, Reddish, User Define Gamma 1.8 – 2.6 HDCP 2.2 OSD Language Arabic, Chinese (simplified), Chinese (traditional), Czech, Deutsch, English, French, Hungarian, Italian, Japanese, Korean, Netherlands, Polish, Portuguese, Romanian, Russian, Spanish, Swedish AMA Yes Audio Built-in Speaker 2.5Wx2 Headphone Jack Yes Power Voltage Rating 100 – 240V Power Supply Built-in Power Consumption (normal) 22 W Power Consumption (max) 58 W Power Consumption (sleep mode) <0.5 W Dimension and Weight Tilt (down/up) -5˚ – 20˚ Swivel (left/right) 20˚/ 20˚ Height Adjustment Stand 130 mm Dimensions (HxWxD) (mm) 409.6 – 539.6×614.1×216.7 Dimensions (HxWxD) (inch) 16.1 – 21.2×24.2×8.5 Dimensions (HxWxD) (w/o Base) (mm) 382.2×614.1×64.1 Dimensions (HxWxD) (w/o Base) (inch) 15.1×24.2×2.5 Net Weight (kg) 6.2 Net Weight (lb) 13.7 Net Weight (w/o Base) (kg) 4 Net Weight (w/o Base) (lb) 8.8 VESA Wall Mount 100×100 mm Accessories Other Accessories QSG, Warranty Card Connectivity HDMI (v2.0) 2 DisplayPort (v1.2) 1 Eye Care Flicker-free Technology Yes Low Blue Light Yes Brightness Intelligence Plus (B.I.+) Yes Color Weakness Yes ePaper Yes Certification TUV Certificate Flicker-free, Low Blue Light Video Enjoyment HDRi Yes Professional Video Format Support Yes Specifications: BenQ MOBIUZ EX2710 27″ Screen Size 27 inch Panel Type IPS Backlight Technology LED backlight Resolution (max.) 1920×1080 Brightness (typ.) 350 nits 1 Year Warranty
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
Experience elite performance with the Lenovo ThinkPad E14 Gen 3, powered by the AMD Ryzen 7 5700U 8-core processor. Featuring 16GB RAM, a lightning-fast 512GB NVMe SSD, and a professional 14-inch FHD display, this laptop is engineered for high-level productivity and military-grade durability.
Genuine-spec touchpad flex cable for MacBook Air 13″ (Model A1932, 2018–2019)—essential for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Air 13-inch (2018 & 2019, Model A1932, Model Identifier MacBookAir8,1) with Intel Core i5/i7 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, Force Touch pressure data, and haptic feedback signals—critical for macOS gestures like Force Click, three-finger lookup, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original in length, connector pitch, EMI shielding, and flexibility—ensures 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 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 careful routing beneath the battery. The cable connects via a ZIF (Zero Insertion Force) socket on the logic board—must be properly aligned and latched without force. Recommended for experienced or certified technicians. Important: This is flex cable only—not a complete trackpad assembly. Must be used with the original or compatible A1932 trackpad and Taptic Engine. Not compatible with MacBook Air M1 (A2337/A2338), M2 (A2681/A2941), or any MacBook Pro model. This is flex cable only—not a complete trackpad assembly. Must be used with the original or compatible A1932 trackpad and Taptic Engine. Not compatible with MacBook Air M1 (A2337/A2338), M2 (A2681/A2941), or any MacBook Pro model.
GAMDIAS XC3 (2g, incl. Cleaning Wipe and Scraper) - Ultimate Performance Thermal Paste for CPU, GPU, consoles, laptops, high thermal conductivity, long durability, non-conductive, non-capacitive GAMDIAS XC3 (2g, incl. Cleaning Wipe and Scraper) – Ultimate Performance Thermal Paste for CPU, GPU, consoles, laptops, high thermal conductivity, long durability, non-conductive, non-capacitive PERFORMANCE THERMAL COMPOUND: XC3 is an easy-to-apply thermal paste that features high-quality thermal compounds with nano-diamond particles that allow excellent conductivity to lower thermals and push your PC to the limit. HIGH THERMAL CONDUCTIVITY: XC3 ensures exceptional heat dissipation by utilizing high conductivity nanoparticles and lowering thermal impedance between the CPU and cooler with its nano-diamond particles. VERSATILE APPLICATION: The compound provides a stable working status from -50°C to 220°C. SAFE AND STABLE: Without electrically conductive materials,the grease eliminates the risk of short-circuiting or discharging. APPLICATION KIT: The paste comes in a luer lock syringe, with a cleaning wipe and scraper included in the product pack for convenience.
Genuine-spec touchpad flex cable for MacBook Pro 13″ (Model A2289, 2020, Intel)—restores full Force Touch functionality, haptic feedback, and preci multi-touch gesture control. OEM-quality replacement for damaged or faulty original cables. Compatible With: MacBook Pro 13-inch (2020, Four Thunderbolt Ports, Model A2289, Model Identifier MacBookPro16,2) with Intel Core i5/i7 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 or erratic trackpad behavior Loss of Force Touch or haptic feedback Complete trackpad unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is unusable Fixing: Intermittent or erratic trackpad behavior Loss of Force Touch or haptic feedback Complete trackpad unresponsiveness Intermittent or erratic trackpad behavior Loss of Force Touch or haptic feedback Complete trackpad unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under internal components (speaker, logic board)—must follow original path. Connects via ZIF (Zero Insertion Force) socket—align carefully, never force. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under internal components (speaker, logic board)—must follow original path. Connects via ZIF (Zero Insertion Force) socket—align carefully, never force. Recommended for experienced or certified technicians only. Important Compatibility Notes: ✅ Only for A2289 (13″, 4 Thunderbolt ports, 2020, Intel) ❌ Not compatible with: A2251 (2 Thunderbolt ports, 2020) A2338 (M1 MacBook Pro, 2020) Any MacBook Air or 14″/16″ MacBook Pro ✅ Only for A2289 (13″, 4 Thunderbolt ports, 2020, Intel) ❌ Not compatible with: A2251 (2 Thunderbolt ports, 2020) A2338 (M1 MacBook Pro, 2020) Any MacBook Air or 14″/16″ MacBook Pro A2251 (2 Thunderbolt ports, 2020) A2338 (M1 MacBook Pro, 2020) Any MacBook Air or 14″/16″ MacBook Pro
HP 5 Pro 524pf Monitor Overview The HP 5 Pro 524pf is a 24-inch Full HD monitor designed for daily productivity. It delivers clear visuals and a clean modern design. As a result, it fits offices, students, and home workspaces. 24-Inch Full HD Display This monitor features a 24-inch Full HD resolution. Therefore, text appears sharp and easy to read. Moreover, images look clear and balanced. Because of this, it supports long working sessions without fatigue. In addition, wide viewing angles improve visibility. As a result, content stays clear from different positions. Smooth Performance for Daily Tasks The HP 5 Pro 524pf provides smooth visuals for everyday use. As a result, scrolling and browsing feel natural. Furthermore, the display maintains consistent brightness. This improves overall viewing comfort. Eye Comfort and Anti-Glare Screen This monitor includes eye comfort features. Therefore, it helps reduce eye strain during extended use. In addition, the anti-glare coating limits reflections. As a result, the screen stays clear in bright environments. Connectivity and Easy Setup The HP 5 Pro 524pf includes HDMI connectivity. As a result, it connects easily to laptops and desktops. Moreover, setup is quick and simple. Therefore, users can start working immediately. Sleek Design and Mounting Options The monitor features a slim and modern design. In addition, it supports VESA mounting. As a result, users can customize their workspace layout. Ideal for Work and Home Use This monitor focuses on clarity and reliability. Moreover, it suits office work, studying, and media viewing. In conclusion, the HP 5 Pro 524pf is a practical Full HD monitor for everyday use. Specifications: Display: 23.8-inch diagonal, IPS panel, 16:9 aspect ratio, 93 PPI, anti-glare. Performance: 100Hz refresh rate (50-100Hz range), 5ms GtG response time, 350 nits brightness. Connectivity: HDMI 1.4, DisplayPort 1.2, and a USB hub.
The LG 32UN880K-B 32″ UHD 4K ERGO Monitor is designed to provide outstanding image quality and maximum comfort for work and entertainment. Its large 32-inch 4K UHD display delivers sharp detail and vibrant colors, making it ideal for professional tasks, creative projects, and media consumption. Moreover, the high resolution allows users to multitask efficiently with clear visuals across multiple applications. This monitor features LG’s ERGO stand, which allows flexible adjustments to improve posture and desk organization. Additionally, users can easily adjust height, tilt, swivel, and pivot positions for a more comfortable viewing experience during long working hours. The modern and clean design also helps free up desk space while maintaining a professional setup. The LG 32UN880K-B offers versatile connectivity options, making it simple to connect laptops, PCs, and other devices. Furthermore, its ergonomic flexibility helps reduce strain during extended sessions. Therefore, it is ideal for professionals, designers, and home office users seeking comfort and performance. Finally, it combines stunning 4K visuals with ergonomic convenience for a productive workspace. Specifications: 32″ UHD 4K monitor with ERGO stand High-resolution display for sharp visuals Flexible ergonomic adjustment system Wide viewing angles and accurate colors Multiple connectivity options
Genuine-spec bilingual UK/Arabic layout keyboard replacement for MacBook Pro 13″ (Model A1708, 2016–2017)—featuring Apple’s second-generation Butterfly mechanism, backlighting, and OEM fit for seamless typing in both English and Arabic. Compatible With: MacBook Pro 13-inch with Touch Bar (2016 & 2017 models, A1708, Model Identifiers MacBookPro13,1 / MacBookPro14,1). Layout: Bilingual UK/Arabic—primary legends in Arabic, secondary (top-left) legends in UK English (QWERTY). Includes £ symbol, Arabic numerals (٠١٢٣…), and standard Arabic character set aligned with Apple’s regional configuration. Keyboard Type: Apple’s 2nd-generation Butterfly mechanism—thin profile with reduced key travel; requires careful handling and clean environment during installation. Integrated Features: Backlit keys (essential for low-light use—legends remain legible) Ambient light sensor support Original-style ribbon cable connector for direct logic board attachment Backlit keys (essential for low-light use—legends remain legible) Ambient light sensor support Original-style ribbon cable connector for direct logic board attachment Build & Fit: Precision-engineered to match Apple’s original dimensions, key alignment, and top-case curvature—ensures consistent actuation and aesthetic continuity. Installation Note: Keyboard is fully glued into the top case. Replacement requires complete disassembly, meticulous adhesive removal, and professional re-gluing. Recommended for certified or highly experienced technicians only.
Logitech G403 HERO – Ergonomic wired gaming mouse with HERO 25K sensor and ultra-precise 25,600 DPI tracking.Delivers pro-grade performance with customizable RGB, 6 buttons, and optional weight tuning. ✅ Full Specifications: Model: Logitech G403 HERO Sensor: HERO 25K Optical Sensor DPI: 100 – 25,600 DPI (adjustable with no smoothing, acceleration, or filtering) Polling Rate: 1000 Hz (1ms response time) Tracking Speed: >400 IPS Acceleration: >40G Buttons: 6 programmable buttons (including 2 side buttons) Switches: Mechanical with metal spring button tensioning (rated for 20M+ clicks) Lighting: RGB Lighting (logo and scroll wheel, customizable via G HUB) Weight: Approx. 87g (mouse only) + 10g optional weight Grip Style: Palm and claw grip support Cable: 2.1 meters (standard rubber cable) Build: Ergonomic right-handed design with rubber side grips Software: Logitech G HUB (for DPI, lighting, macros, and profiles) Compatibility: Windows 7 or later, macOS 10.11 or later, Chrome OS Onboard Memory: Yes (save DPI and button settings directly to the mouse)
AOC 24B30H2 23.8-inch IPS monitor delivers smooth and clear performance for work, study, and casual use. It focuses on reliable Full HD visuals, wide viewing angles, and stable refresh rate for daily tasks. Additionally, it features a 23.8-inch IPS panel with Full HD resolution (1920 × 1080). This panel provides consistent colors and wide viewing angles, so it ensures clear visuals from different positions. Moreover, it supports a 100Hz refresh rate with 1ms MPRT response time. As a result, it delivers smoother motion and reduces blur during scrolling and light gaming. The monitor includes Adaptive Sync technology. Therefore, it reduces screen tearing and stuttering for more stable visual performance. In addition, it supports HDR and wide color coverage. This improves image depth and color accuracy for media and general use. Furthermore, it offers HDMI 1.4 and VGA connectivity with a frameless design. So it supports modern and legacy devices while keeping a clean desk setup. AOC 24B30H2 23.8-inch IPS monitor provides balanced performance, smooth visuals, and essential features for everyday productivity. Specifications: 23.8-inch IPS panel with Full HD 1920 × 1080 resolution 100Hz refresh rate for smoother visual performance 1ms MPRT response time for reduced motion blur Adaptive Sync for tear-free and stable visuals HDMI 1.4 and VGA connectivity for wide compatibility
A4Tech KRS-8372 USB Keyboard QWERTY English Black
Specifications Input/Output USB Sound Mode Game Mode, Standard Mode, 3D Surround Sound Mode, Live Sound Mode, Extra Bass Mode Category Speakers Use HOME Input Power(W) <25 W Voice Control No Waterproof Yes Support APP No Intelligent Personal Assistant None Audio Crossover Full-Range Number of Loudspeaker Enclosure 2 Power Source Battery, USB Channels 2 (2.0) Battery Yes Communication Bluetooth, Wireless Speaker Type Portable Cabinet Material Plastic Brand Name AEVYVKV Origin Mainland China
A premium pre-owned Lenovo ThinkPad T590 with a 15.6" display, powerful 8th Gen Core i5 processor, 8GB RAM, and fast 256GB SSD—engineered for professionals who need reliability, security, and all-day productivity.
The LG 32UR500K-B 32 Inch Monitor delivers large-screen clarity and detailed visuals for work, entertainment, and everyday computing. Its spacious 32-inch display provides an immersive viewing experience, making it ideal for productivity, content consumption, and multitasking. Moreover, the high-resolution panel ensures sharp images and vibrant colors, allowing users to enjoy clear visuals across various applications. This monitor offers wide viewing angles and accurate color reproduction, making it suitable for office tasks, media editing, and home entertainment. Additionally, the sleek and modern design fits easily into professional or home setups while maximizing desk space efficiency. The large screen size also allows users to work with multiple windows comfortably without constant switching. The LG 32UR500K-B includes multiple connectivity options, making it easy to connect PCs, laptops, and consoles. Furthermore, ergonomic tilt adjustments allow comfortable viewing during long work or entertainment sessions. Therefore, it is perfect for professionals, students, and home users seeking performance and comfort. Finally, it combines large-screen immersion, clarity, and modern design for everyday use. Specifications: 32-inch monitor for work and entertainment High-resolution display for clear visuals Wide viewing angles and accurate colors Multiple connectivity options Sleek and modern design
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
This replacement touchpad for MacBook Air A2179 comes in Rose Gold and is sold without the flex cable. Perfect for restoring smooth trackpad performance, it’s ideal for repair technicians and users replacing a damaged or non-working touchpad. The MacBook Air A2179 Touchpad (Rose Gold) is a high-quality replacement part designed to restore full trackpad functionality to your laptop. Whether your original touchpad is unresponsive, physically damaged, or experiencing tracking issues, this replacement provides a reliable solution. Please note that this unit is without the flex cable, meaning it requires the original flex or a separate replacement flex for installation. Ideal for repair shops and technicians, it ensures smooth navigation and precise control. Compatible with MacBook Air A2179 Rose Gold Color Match for original look and finish Replacement Touchpad Only (without flex cable) Restores Smooth Trackpad Functionality Precision Tracking & Gesture Support (when installed correctly) Ideal for Repairs & Replacements High-Quality Build designed for durability and long use Designed specifically for Apple MacBook Air A2179 models. Recommended for technicians and repair shops or users replacing a faulty touchpad. Ensure compatibility before purchase and note that a flex cable is required for installation.
Cooler Master GM27-FFS 27″ 0.5ms IPS 165Hz Gaming Cooler Master CMI-GM27-FFS-EK 27″ 0.5ms 165Hz FHD Ultra-Speed IPS Panel FreeSync/G-Sync/A-Sync HDR10 Gaming Monitor (2X HDMI2.0 + 2X Display Port) A no-frills, high-performance monitor which focuses on good specifications and high value. A 27″ FHD monitor equipped with an UltraSpeed IPS 165Hz refresh rate panel, complete with Dynamic Overdrive and Adaptive Sync. Combine that with 120% sRGB/90% DCI-P3 color coverage, and you’ve got a monitor that’ll deliver the performance you need no matter what you are doing. READY FOR ANY SITUATION The 27″ Full HD 165Hz display combined with 90% DCI-P3 wide color gamut makes the GM27-FFS an incredibly versatile monitor. With features essential for both gaming and productivity, you can have the freedom to play your games without a hitch during the night or focus on your work during the day time. ULTRASPEED IPS WITH DYNAMIC OVERDRIVE Equipped with the latest Ultra-Speed IPS panel, GM27-FFS is up to 4x faster than traditional IPS panels. The pixels transition faster to other colors and scenes, leading to an exceptionally smooth picture with significantly less motion blur or smearing. Specifications: Cooler Master GM27-FFS 27″ 0.5ms IPS 165Hz Gaming 1 years warranty
The MSI Modern MD2412P 24″ 100Hz Monitor is the perfect choice for work and entertainment. It offers a smooth and immersive viewing experience with a 100Hz refresh rate. This monitor ensures sharp visuals and fluid motion. With a 24-inch Full HD display, the MSI Modern MD2412P delivers clear and vibrant colors. The IPS panel provides wide viewing angles, making it great for multitasking. Whether you’re working, watching movies, or gaming, the visuals stay sharp and consistent. The 100Hz refresh rate makes scrolling and animations smoother. This reduces eye strain and improves productivity. Fast-moving visuals are more fluid, which is great for casual gaming and video editing. Setting up the MSI Modern MD2412P 24″ 100Hz Monitor is simple. It comes with an ergonomic stand that allows height, tilt, and swivel adjustments. You can easily find the most comfortable viewing position for long hours of use. Connectivity is easy with multiple ports, including HDMI and DisplayPort. This allows you to connect to laptops, desktops, and gaming consoles effortlessly. It ensures a stable and reliable connection for all your devices. The monitor also features eye-care technology, reducing blue light and flicker. This helps prevent eye fatigue, making it perfect for extended use. Whether you’re working from home or gaming, your eyes will stay comfortable. The MSI Modern MD2412P 24″ 100Hz Monitor combines style and performance. Its modern and slim design fits well in any workspace. The minimal bezels offer a sleek look and maximize screen space. Upgrade your setup with this reliable and stylish monitor today. Specifications: Display : 23.8″ IPS Screen : FHD (1920×1080) Refresh Rate : 100Hz Response Rate : 1ms
