Size 34″ Display Type IPS Color Gamut (Typ.) sRGB 99% (CIE1931) Color Depth (Number of Colors) 16.7M Pixel Pitch (mm) 0.312 x 0.310 mm Response Time (GTG) 5ms (GtG at Faster), 1ms MBR Refresh Rate 75Hz Aspect Ratio 21:9 Display Resolution UW-FHD Resolution 2560 x 1080 Brightness 400cd/m² Contrast Ratio 1000:1 Viewing Angle 178º (R/L), 178º (U/D) Surface Treatment Anti-Glare INPUT/OUTPUT HDMI Yes x 1 DisplayPort Yes x 1 USB Type-C Yes (DP Alternate Mode) Headphone Out Yes POWER Type Adapter Input 100-240 Vac, 50/60Hz Power Save/Sleep Mode (Max.) Less than 0.5W DC Off (Max.) Less than 0.3W Power Consumption (Typ.) 30W Power Consumption (Max.) 40W SPECIAL FEATURES Color Weakness Mode Yes Adaptive Sync AMD FreeSync™ Black Stabilizer® Yes Dynamic Action Sync® Yes Crosshair® Yes Flicker Safe Yes Smart Energy Saving Yes Reader Mode Yes Super Resolution+ Yes Color Calibrated Yes Dual Controller Yes OnScreen Control (OSC) Yes HDR (High Dynamic Range) HDR10 VESA DisplayHDR™ DisplayHDR™ 400 HDR Effect Yes Auto Input Switch Yes Motion Blur Reduction Technology Yes FreeSync (Low Frame Compensation) Yes 1ms Motion Blur Reduction Yes SOUND Speaker No Built-in Speaker DIMENSIONS/WEIGHTS With Stand (WxHxD) 32.2″ x 22.4″ x 9.4″ (Up), 32.2″ x 18.0″ x 9.4″ (Down) Without Stand (WxHxD) 32.2” x 14.4” x 1.8” Shipping Dimensions (WxHxD) 37.0″ x 20.3″ x 8.6″ With Stand Weight 17.4 lbs Without Stand Weight 13.2 lbs Shipping Weight 24.0 lbs STAND Display Position Adjustments Tilt/Height CABINET/ACCESSORIES Wall Mount Size (mm) 100 x 100 mm HDMI Yes 3 Years Warranty manufacturer link
WiWU Linker 721HD Hub – Compact USB-C hub with 7 ports including 100W PD, dual USB-A, USB-C data, HDMI 4K60, and dual SD/TF slots.Aluminum body, plug‑and‑play compatibility with MacBooks and modern USB‑C devices—ideal for laptop expansion. Model: Linker 721HD (WiWU) Material: Aluminum-alloy shell Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Cable: Fixed USB‑C male cable (approx. 15 cm) Compatibility: Plug-and-play with USB-C/Thunderbolt 3/4 devices (MacBook, XPS, Chromebooks, mobile devices with DP-Alt Mode) Design: Compact, space gray finish optimized for travel/work setups Weight: ~150 g
HP M24fwa Monitor Overview The HP M24fwa is a 24-inch Full HD monitor designed for modern workspaces. It combines a slim design with clear visuals. As a result, it suits offices, home use, and study setups. 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 vibrant. Because of this, it supports long working and browsing sessions. In addition, wide viewing angles keep content visible from different positions. As a result, collaboration becomes easier. Smooth and Comfortable Viewing The HP M24fwa delivers smooth performance for daily tasks. As a result, scrolling and multitasking feel natural. Furthermore, the display maintains balanced brightness. This improves overall viewing comfort. Eye Comfort and Anti-Glare Protection This monitor includes eye comfort features. Therefore, it helps reduce eye strain during extended use. In addition, the anti-glare screen limits reflections. As a result, the display stays clear in bright rooms. Connectivity and Easy Setup The HP M24fwa includes HDMI connectivity. As a result, it connects easily to laptops and desktops. Moreover, setup remains quick and simple. Therefore, users can start working immediately. Slim Design and Mounting Support The monitor features a slim and modern design. In addition, it supports VESA mounting. As a result, users can save desk space and create flexible setups. Ideal for Daily Use This monitor focuses on clarity and reliability. Moreover, it suits office work, studying, and media viewing. In conclusion, it offers a practical and stylish display solution. Specifications: Display: 23.8-inch IPS panel with 178-degree ultra-wide viewing angles. Resolution: FHD (1920 X 1080) at 75Hz refresh rate. Visual Quality: 300 nits brightness, 1000:1 contrast ratio, and 99% sRGB color gamut for accurate, vibrant, and consistent colors. Gaming/Performance: AMD Free Sync technology reduces screen tearing and stuttering
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.
Samsung Smart Monitor M8 M80F 32″ features a 4K (3,840 × 2,160) display with vivid visuals and high detail. Additionally, the VA panel offers wide viewing angles and consistent color across the screen. This monitor blends productivity and entertainment in a single screen. Moreover, the smart functions include apps, voice interaction, and built‑in smart services without needing a PC. With Tizen OS, users can stream content, control smart devices, and access multitasking features. The SlimFit camera enhances video calls without extra hardware. Furthermore, smart AI picture and voice tools adjust visuals and audio for comfort and clarity. The USB‑C port supports video and up to 65 W power delivery for connected devices. The ergonomic stand lets users adjust height, tilt, and pivot for proper viewing. Finally, Adaptive Sound Pro speakers deliver audio directly from the monitor. Eye Saver Mode and Flicker Free tech help reduce eye strain during long use. This monitor also supports wireless display connection and smart home control via SmartThings. Specifications: 32″ 4K UHD (3,840 × 2,160) display with wide viewing angles and consistent color Built‑in smart features with Tizen OS for streaming and apps without a PC SlimFit camera for video calls USB‑C video with 65 W power delivery and multiple connectivity options Adaptive Sound Pro speakers with Eye Saver Mode and Flicker Free technology
90W Adapter Laptop Charger for Toshiba Satellite L305 L305D L455 L505 L505D L635 L645 L655 L655D L745 L755 L775 L855 L875 A105 A135 C655 C675 C850 C855; PA3714U-1ACA PA5035U-1ACA Power Cord
Genuine-spec battery flex cable for MacBook Pro models A2159 (16", 2019), A1708 (13", 2016–2017), and A2338 (13", 2020 M1)—restores critical communication between the battery and logic board for proper power-on, charging, and macOS battery status. Genuine-spec battery flex cable for MacBook Pro models A2159 (16″, 2019), A1708 (13″, 2016–2017), and A2338 (13″, 2020 M1)—restores critical communication between the battery and logic board for proper power-on, charging, and macOS battery status. Carries SMBus (System Management Bus) signals from the battery to the logic board Enables: Accurate battery percentage and health reporting in macOS Proper charging control (start/stop, thermal throttling) Power-on capability (MacBooks will not boot without this connection) Prevention of “Battery Not Charging” or “Service Battery” errors Accurate battery percentage and health reporting in macOS Proper charging control (start/stop, thermal throttling) Power-on capability (MacBooks will not boot without this connection) Prevention of “Battery Not Charging” or “Service Battery” errors MacBook won’t turn on (even with a good battery) Battery shows “–%”, 0%, or “Not Charging” Random shutdowns under load macOS displays “No Battery Available” Logic board powers fans or lights but no display output Battery flex cable only (with OEM-style connector and strain relief) ❌ Does not include: battery, logic board, or trackpad Requires full bottom case removal and battery disconnection Connects via a ZIF or press-fit socket on the logic board Must be routed precisely to avoid tension or micro-tears Highly recommended for experienced or certified technicians—improper installation can cause permanent power or battery communication failure
WiWU ZM‑901 – Sturdy foldable aluminum stand with adjustable angles and silicone pads, weighing just 900 g.Enhances posture, airflow, and workspace ergonomics while staying compact and travel-friendly. Model: WiWU ZM‑901 Material: Metal (aluminum/carbon steel) frame with silicone pads for grip Dimensions (Folded): 260 × 225.5 × 53 mm Package Size: 290 × 250 × 50 mm Net Weight: Approx. 900 g Compatibility: Fits laptops, tablets, and smartphones up to ~17 ” (some listings note 15.6″ limit, but device capacity varies) Features: Adjustable angle configuration, detachable foldable design for portability, silicone surface pads for anti-slip and vibration reduction Build & Design: Durable yet lightweight, crafted to enhance airflow and promote ergonomic posture
Searching for a monitor that enhances your productivity and comfort? Look no further than the ViewSonic 24” 60Hz Monitor VG2448. This monitor is your gateway to a superior visual experience. First and foremost, let’s discuss clarity. With its 24-inch screen size, the VG2448 delivers crisp and clear images, ensuring every detail is sharp and vibrant. Say goodbye to eye strain and hello to comfortable viewing. Transitioning to performance, this monitor boasts a refresh rate of 60Hz, providing smooth and fluid visuals for an enhanced viewing experience. Whether you’re working on spreadsheets or watching videos, motion blur will be a thing of the past. Moreover, its ergonomic design offers customizable tilt, swivel, and height adjustments, allowing you to find the perfect viewing angle for maximum comfort. Say goodbye to neck and back strain with this user-friendly monitor. In addition, the VG2448 features a variety of connectivity options, including HDMI, DisplayPort, and VGA, ensuring compatibility with a wide range of devices. Seamlessly connect your PC, laptop, or gaming console with ease. Furthermore, this monitor is equipped with ViewSonic’s exclusive Eye Care technology, which helps reduce eye fatigue during prolonged use. Protect your vision while enjoying extended viewing sessions. In conclusion, the ViewSonic 24” 60Hz Monitor VG2448 is a versatile and reliable choice for both work and entertainment. With its superior clarity, performance, and ergonomic design, it’s sure to enhance your productivity and comfort. Upgrade your viewing experience today and see the difference for yourself. Specifications: Display : 24″ IPS Resolution : FHD (1920×1080) Refresh Rate : 60Hz Response Rate : 5ms GTG
The AOC Q27G11SE is a 27-inch 2K gaming monitor designed for ultra-smooth and responsive gameplay. First, its 2560 × 1440 resolution delivers sharp visuals and detailed images. The 320Hz refresh rate ensures extremely fluid motion during competitive gaming. In addition, the 0.3ms response time reduces motion blur and ghosting. Moreover, adaptive sync technology enhances smooth performance without screen tearing. The high refresh panel improves reaction speed in fast-paced games. Furthermore, the modern slim design fits perfectly into gaming setups and desks. Finally, the AOC Q27G11SE combines 2K clarity, 320Hz performance, and ultra-fast response in one competitive display. Overall, it is ideal for esports players and serious gamers. Specifications: 27-inch 2560 × 1440 2K resolution 320Hz ultra-fast refresh rate 0.3ms rapid response time Adaptive sync for tear-free gaming Slim modern gaming design
2016 Apple 15" MacBook Pro Touch-Bar Logic Board 2.7Ghz i7 16Gb A1707 512GB , With Dual Graphics Radeon Pro 2016 Apple 15″ MacBook Pro Touch-Bar Logic Board 2.7Ghz i7 16Gb A1707 512GB , With Dual Graphics Radeon Pro
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.
Acer Nitro VG270bmipx 27 Inch Screen size 27 Inches Display resolution maximum 1920 x 1080 Pixels Brand Acer Special feature AMD FreeSync, Blue Light Filter, Frameless, Tilt Adjustment, Flicker-Free Refresh rate 75 Hz Connectivity technology VGA + HDMI + DP + Audio in/out Aspect ratio 16:9 Specific uses for product Personal, Gaming Response time 1 Milliseconds Colour Black/Red
GAMDIAS AURA GK2 White & Black | Full-Size Wired Mechanical Keyboard | Tactile Mechanical Switches | Multi-Colour Backlit Switches | 10 Built-in Hot Keys | 50 Million Switch Lifecycle | USB-A About this item Gamdias AURA GK2 is a wired mechanical keyboard designed to complement your gaming experience and skills. We have added multiple functionality features to make the AURA GK2 a high-performance keyboard. Each key has a 50 Million Key Press Lifecycle over the standard 20 million. This enables the keyboard to stay efficient and provide accurate feedback even after a longer use period. The Keyboard has been designed to provide a highly responsive and easily adaptable gaming experience with its Tactile Mechanical Keyboard while complimenting your setup with dual color keycaps. The Keyboard comes in the White & Black color to easily blend in with your aesthetic environment and complement your professional or gaming setup. The keyboard has a multi-colour backlight and 9 Built-In Lighting effects. Dimensions: 29.2 x 10.2 x 4 cm; 519 Grams
OEM-spec trackpad replacement (without flex cable) for MacBook Air 15.3″ M2 (Model A2941, EMC 8301) in Silver finish—engineered for precise Force Touch response, smooth multi-touch gestures, and seamless integration with the original chassis. Compatible With: MacBook Air 15.3-inch (2023, Model A2941, EMC 8301) with Apple M2 chip. Part Type: Trackpad only—does not include the flex cable, Taptic Engine, or mounting brackets. Designed for technicians who will reuse or transfer the original internal components. Finish: Silver—matches the original Silver and Starlight lower case for perfect visual continuity. Force Touch Support: Fully compatible with pressure-sensitive input and haptic feedback when used with the original Taptic Engine and logic board—no loss of functionality. Precision Build: Mirror-smooth glass surface with exact curvature, texture, and micro-click mechanism matching Apple’s OEM standards for consistent tracking and tactile feel. Installation Requirements: Requires full bottom case disassembly and careful transfer of the original flex cable and Taptic Engine. Proper adhesive application is essential to maintain structural rigidity and sensor alignment. Recommended for professional or certified repair technicians only.
The ViewSonic VX24G10 24″ FHD 240Hz Gaming Monitor delivers ultra-smooth visuals ideal for gaming and daily use. It displays Full HD resolution with bright colors and crisp detail. The screen uses an IPS panel for wide viewing angles and accurate color. This makes movies, work, and games look clear and vivid. Moreover, the VX24G10 offers a blazing 240 Hz refresh rate. It reduces motion blur and makes fast movements appear fluid. This is especially helpful in competitive games or fast action scenes. The 1 ms response time ensures quick pixel transitions for sharp results. It helps avoid ghosting and lag during gameplay. In addition, the monitor includes modern connectivity options: multiple HDMI ports and DisplayPort. These ports let you connect PCs, laptops, and consoles easily. This flexibility supports many devices without trouble. The monitor also supports adaptive sync (FreeSync / G-Sync), which reduces screen tearing and ensures smooth frame rates. Furthermore, the ViewSonic VX24G10 features eye-friendly technology. Its flicker-free panel and blue-light filter help reduce eye strain during long sessions. The slim bezel design gives a modern look and saves desk space. The stand allows slight tilt adjustment for comfortable viewing angles. Also, the monitor supports HDR10, enhancing contrast and improving dynamic range for richer images. This adds depth to games, movies, and creative work. The combination of IPS quality, fast refresh, and HDR makes the VX24G10 a versatile choice for both gaming and productivity. Overall, the ViewSonic VX24G10 24″ FHD 240Hz Gaming Monitor offers smooth motion, sharp visuals, strong compatibility, and eye care. It is perfect for gamers, creators, and anyone who values performance and comfort. It enhances every task — from gaming to work to watching media. Specifications: Display : 24″ IPS Resolution : 1920×1080 Refresh Rate : 240Hz Response Time : 1ms
The Samsung QLED 55″ 4K UHD Smart TV Q7 Series QA55Q7FAAU delivers a premium viewing experience with advanced QLED display technology. It produces bright, sharp, and colorful images, so movies, sports, and games look clear and immersive on the 55-inch screen. QLED technology uses Quantum Dot enhancement to improve brightness and color accuracy. As a result, visuals appear more vibrant and balanced across both dark and bright scenes. This helps maintain consistent picture quality in different lighting conditions and content types. Vision AI enhances picture and sound in real time. It analyzes each scene and automatically adjusts brightness, sharpness, and color for optimal results. Therefore, the TV consistently delivers improved visuals without manual tuning. In addition, AI upscaling improves lower-resolution content closer to 4K quality for better clarity and detail. HDR support expands contrast and color depth, making visuals more dynamic and lifelike. Fast motion handling also improves clarity, which enhances sports and action content by reducing blur and improving smoothness. The Smart TV platform provides easy access to streaming apps, gaming features, and smart home controls. It runs smoothly and allows quick switching between applications. In addition, the slim design with thin bezels gives the Samsung QLED 55 4K UHD Smart TV Q7 Series QA55Q7FAAU a modern and premium appearance suitable for any living space. Overall, this Samsung QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful home entertainment experience. Specifications: QLED technology delivers bright and vivid picture quality 55-inch 4K UHD display provides immersive viewing experience Vision AI enhances picture and sound automatically in real time HDR improves contrast, brightness, and color depth Smart TV platform supports apps, streaming, and smart features
The Asus TUF VG249Q1R 24″ 144Hz Gaming Monitor delivers smooth and immersive gameplay. With a 144Hz refresh rate and 1ms response time, it ensures ultra-fast performance for competitive gaming. This 24-inch Full HD display offers crisp and vibrant visuals. The IPS panel provides wide viewing angles and accurate colors, making every detail stand out. Whether you’re gaming or watching movies, the experience is stunning. With Extreme Low Motion Blur (ELMB) technology, motion blur is reduced for sharper images. This keeps fast-moving scenes clear and prevents ghosting. Your gameplay stays smooth and responsive. The Asus TUF VG249Q1R also features Adaptive-Sync and FreeSync technology. These prevent screen tearing and stuttering, ensuring fluid visuals. Even in intense action, your gameplay remains lag-free. Designed for comfort, this gaming monitor has flicker-free technology and a low blue light mode. These features reduce eye strain, making long gaming sessions more comfortable. The monitor has multiple connectivity options, including HDMI and DisplayPort. It’s compatible with PCs, gaming consoles, and other devices, making it a versatile choice. With a sleek, TUF Gaming-inspired design, the monitor looks as good as it performs. The slim bezels provide a modern look, perfect for multi-monitor setups. Upgrade your gaming setup with the Asus TUF VG249Q1R 24″ 144Hz Gaming Monitor for smooth, immersive, and tear-free gaming. Specifications: Display : 24″ IPS Resolution : 1920×1080 FHD Refresh Rate : 144Hz Response Rate : 1ms
The Samsung Crystal UHD U8000F 43″ 4K Tizen OS Smart TV UA43U8000FUXTW uses a 43-inch LCD panel with 3840 × 2160 resolution. It delivers standard 4K output for everyday viewing, streaming, and console use in smaller rooms. 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: 43-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
The MSI PRO MP251 E2 24.5″ 120Hz Monitor is designed for smooth performance and vibrant visuals. It offers a fast 120Hz refresh rate, providing a fluid viewing experience for work and entertainment. Whether you’re working on tasks or watching videos, this monitor delivers clear and sharp visuals. With a 24.5-inch Full HD display, the MSI PRO MP251 E2 provides stunning image quality. The high resolution ensures crisp details, making it perfect for productivity and multimedia use. The IPS panel technology enhances color accuracy and wide viewing angles, ensuring consistent colors from any angle. The fast 120Hz refresh rate helps reduce motion blur and provides smoother visuals. This makes it great for video editing, casual gaming, and multitasking. You’ll experience a more responsive display that enhances your workflow. Setting up the MSI PRO MP251 E2 24.5″ 120Hz Monitor is easy. It comes with multiple connectivity options, including HDMI and DisplayPort, allowing you to connect your devices effortlessly. Whether you’re using a PC, laptop, or gaming console, this monitor fits perfectly into your setup. The monitor also features an eye-care design with flicker-free technology and a low blue light mode. This helps reduce eye strain, making it ideal for long hours of work or study. Its slim and modern design blends seamlessly into any workspace, saving desk space while enhancing your setup. The adjustable stand allows you to find the perfect viewing angle for comfort and productivity. Upgrade your display with the MSI PRO MP251 E2 24.5″ 120Hz Monitor and enjoy a smooth and vibrant visual experience. Specifications: Display : 24.5″ IPS Screen : FHD (1920×1080) Refresh Rate : 120Hz Response Rate : 1ms
