The LG 27UP850K 27″ 4K UHD UltraFine Monitor delivers amazing image quality and performance. It features a 27-inch 4K UHD display that shows every detail clearly. With four times the resolution of Full HD, images look sharper and more lifelike. This monitor is perfect for professionals and creators. It supports HDR400, which brings brighter highlights and deeper contrast. Colors appear rich and accurate, ideal for photo or video editing. The IPS panel ensures wide viewing angles with consistent color. Whether you’re working or watching movies, visuals stay clear from every side. It’s built for comfort and productivity in any workspace. The LG 27UP850K Monitor also includes USB-C connectivity for easy setup. You can connect your laptop, transfer data, and charge with one cable. This feature keeps your desk clean and organized. The design is sleek and professional. Its slim bezels make it great for dual-monitor setups. The adjustable stand allows tilt, height, and pivot movements for better comfort. Gamers will enjoy smooth performance too. The AMD FreeSync support reduces screen tearing and lag. Fast response time ensures fluid motion in every frame. It also includes built-in speakers for clear and balanced sound. You can enjoy videos or meetings without external speakers. Every feature focuses on convenience and quality. The LG 27UP850K 27″ 4K UHD UltraFine Monitor combines elegance, performance, and precision. It’s the perfect choice for professionals, gamers, and everyday users. Specifications: Display : 27″ IPS Resolution : 4K UHD (3840 x 2160) Refresh Rate : 60Hz Response Rate : 5ms GTG
Aoc Agon 24-inch WQHD 165Hz Gaming Monitor Product Details Size: 23.8 inches. Panel Type: TN (16.7 Million Colours with 170/160 º viewing angles). Resolution: 2K / WQHD (2560x1440p). Refresh Rate: 165Hz. Respomse Time: 1 ms (GTG). Aspect Ratio: 16:9. Sync Technology: Nvidia G-Sync. Brightness: 350 cd/m2. Contrast Ratio: Static: 1000:1, Dynamic: 50M:1 Anti-Glare 3H hard coating with an Ultra Narrow bezel. Adjustable Height within a 13cm range. Tilt Adjustment: -3.5° ~ +21.5°. Swivel: -20° ~ +20°. Pivots up to 90°. VESA Wall Mounting : 100x100mm. (x2) 2W built-in speakers with microphone. Ports: (x1) HDMI 1.4 (x1) DisplayPort 1.2 (x4) USB-A 3.0 (x1) USB-B (x1) 3.5mm audio jack Dimensions (incl base): 55.5 x 21.3 x 49 cm. Lowblue Light mode: Protection from eye strain without sacrificing color composition. Specifications: Aoc Agon 24-inch WQHD 165Hz Gaming Monitor Size: 23.8 inches. Panel Type: TN (16.7 Million Colours with 170/160 º viewing angles). Resolution: 2K / WQHD (2560x1440p). Refresh Rate: 165Hz.
Apple Magic Mouse: Wireless, Bluetooth, Rechargeable. Works with Mac or iPad; Multi-Touch Surface - White (Pre-Owned) Apple Magic Mouse: Wireless, Bluetooth, Rechargeable. Works with Mac or iPad; Multi-Touch Surface – White (Pre-Owned) About this item WIRELESS, RECHARGEABLE CONVENIENCE — Magic Mouse connects wirelessly to your device via Bluetooth. And the rechargeable internal battery means no loose batteries to replace. WORKS WITH MAC OR IPAD — It’s ready to go right out of the box and pairs quickly with your Mac or iPad so you can get to work right away. SWIPE AND SCROLL ON THE MULTI-TOUCH SURFACE — The Multi-Touch surface allows you to perform simple gestures such as swiping and scrolling. And an optimized foot design lets Magic Mouse glide smoothly across your desk. GO WEEKS WITHOUT CHARGING — The incredibly long-lasting internal battery will power your Magic Mouse for about a month or more between charges. Comes with a woven USB-C to Lightning Cable that lets you pair and charge by connecting to a USB-C port on your Mac or iPad. SYSTEM REQUIREMENTS — Requires a Bluetooth-enabled Mac with OS X 10.11 or later or an iPad with iPadOS 13.4 or later.
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
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
The HP P24H G5 24” 75Hz FHD Monitor is a modern display designed for everyday work, entertainment, and productivity. It combines clear visuals, smooth motion, and simple usability in a sleek design. First, this monitor features a 23.8-inch Full HD (1920 × 1080) IPS panel for bright colors and wide viewing angles. As a result, text and images stay sharp for work, videos, and browsing. In addition, the HP P24H G5 24” 75Hz FHD Monitor supports a 75 Hz refresh rate, giving smoother motion for videos and casual gaming. Therefore, motion looks more fluid than on basic 60 Hz screens. This display uses wide 178°/178° viewing angles and anti-glare treatment to help reduce reflections and maintain clarity from many positions. This makes it easier to share content with others. The panel also delivers a typical brightness of 250 nits and a contrast ratio of 1000:1, so whites and blacks stay balanced for clear content. Thus, your work and entertainment stay easy to see. The HP P24H G5 includes built-in dual 2 W speakers for basic audio without extra accessories. This helps when you watch videos or join online meetings. Connectivity options include HDMI 1.4, DisplayPort 1.2, and VGA, so you can connect laptops and desktops easily. This makes setup quick with many devices. The stand supports height adjustment and tilt to help you find a comfortable viewing position for long sessions. Also, it has a 3-sided micro-edge bezel for a modern look and cleaner multi-monitor setups. This monitor is also flicker-free with low blue light mode, helping reduce eye strain during extended use. This makes it suitable for office work and daily use. In conclusion, the HP P24H G5 24” 75Hz FHD Monitor offers clear display, smooth visuals, and flexible connectivity for work and play. Overall, it is a strong choice for home, office, and small business setups. Specifications: Display : 23.8″ IPS Resolution : FHD (1920 x 1080) Refresh Rate : 75 Hz Response Rate : 5ms GtG
Philips 221V8LB/67 22-inch Full HD monitor delivers clear and reliable performance for everyday computing. It focuses on sharp visuals, eye comfort, and simple connectivity for home and office use. Additionally, it features a 21.5-inch VA panel with Full HD resolution (1920 × 1080). This provides clear detail and strong contrast, so it improves readability and general viewing comfort. Moreover, it supports up to a 100Hz refresh rate (overclocked) with smooth visual output. As a result, it reduces flicker and makes scrolling and video playback more fluid. The monitor includes a 4ms response time (GtG). Therefore, it handles everyday motion smoothly for browsing, office work, and media use. In addition, it comes with Adaptive Sync support. This helps reduce screen tearing for more stable visuals during dynamic content. Furthermore, it includes LowBlue Mode and Flicker-Free technology. So it reduces eye strain during long hours of use. It also provides HDMI and VGA connectivity with a slim, tilt-adjustable design. This ensures compatibility with modern and older devices while keeping setup simple. Philips 221V8LB/67 22-inch Full HD monitor delivers reliable performance, comfortable viewing, and essential features for daily productivity. Specifications: 21.5-inch VA panel with Full HD 1920 × 1080 resolution Up to 100Hz refresh rate for smoother visuals 4ms GtG response time for stable motion Adaptive Sync support for reduced tearing LowBlue Mode and Flicker-Free eye comfort technology
In the landscape of monitors, the ViewSonic VX3218C-2K stands out as a cutting-edge solution, offering immersive visual brilliance and advanced features for an unparalleled viewing experience. Transitioning to its key features, the VX3218C-2K excels in providing a stunning 2K resolution. This monitor is designed to deliver crisp and detailed visuals, ensuring a visually captivating experience for work, gaming, or entertainment. Moreover, this display impresses with its sleek and modern design. The ViewSonic VX3218C-2K not only enhances the aesthetics of your workspace but also ensures a slim profile and minimal bezels, creating an immersive viewing environment. In addition to its functionality, the VX3218C-2K 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 viewing preferences. Furthermore, ViewSonic’s commitment to user satisfaction is evident in the VX3218C-2K’s enhanced color technology and eye-care features. It’s a reliable companion for extended viewing sessions, offering both visual excellence and comfort. In conclusion, the ViewSonic VX3218C-2K redefines immersive brilliance, combining high-resolution visuals, sleek design, and user-friendly features. Elevate your viewing experience effortlessly with the VX3218C-2K – your gateway to an immersive and captivating visual journey! Specifications Curve : 1500R Refresh Rate : 165Hz Response Rate : 1ms Ultra-Fast Input Technology : AMD FreeSync Premium ViewMode: Game/Movie/Web/Text/Mono Speaker : 2W Dual Speakers Colors : HDR10 Input : HDMI
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.
The MSI MAG 275QPF X30 0.5ms 2K 300Hz Gaming Monitor delivers fast, smooth performance and sharp visuals for serious gamers. Its 27-inch screen with 2K resolution brings games, movies, and work to life with crisp detail and vibrant colors. Moreover, the ultra-fast 300Hz refresh rate helps reduce motion blur and deliver fluid action during intense gaming sessions. This monitor features a 0.5ms response time that allows you to react quickly in fast-paced games, keeping visuals clear even during rapid movement. Additionally, the display supports wide viewing angles and rich color performance, making your experience more engaging whether you play competitive games or watch movies. The sleek design blends well into gaming setups and home offices. The MSI MAG 275QPF X30 also includes multiple connectivity options, making it easy to connect PCs, laptops, and consoles. Furthermore, ergonomic tilt adjustment helps you find a comfortable viewing angle for long sessions. Therefore, it is ideal for competitive and casual gamers alike who value speed and clarity. Finally, it combines fast response, smooth motion, and sharp visuals for great everyday use. Specifications: 27″ 2K gaming monitor 300Hz refresh rate for smooth motion 0.5ms response time for fast action Vibrant visuals and wide viewing angles Multiple connectivity options
The Samsung 65-Inch OLED Smart TV | QA65S90FAEXTW is a premium entertainment display designed to deliver exceptional picture quality and advanced smart features. Featuring OLED technology, this television produces deep blacks, vibrant colors, and impressive contrast for a truly immersive viewing experience. In addition, the 65-inch screen size provides an ideal balance between cinematic entertainment and everyday home use. The OLED panel uses self-illuminating pixels, and it allows precise control over brightness and contrast in every scene. As a result, movies, sports, and games appear more realistic and detailed. Furthermore, the 4K UHD resolution delivers sharp image quality, ensuring that content looks crisp and lifelike. Samsung enhances the viewing experience with intelligent AI-powered picture processing. Therefore, the TV automatically optimizes image quality, color accuracy, and motion performance based on the content being displayed. In addition, AI upscaling improves lower-resolution content, bringing it closer to 4K clarity. HDR support expands brightness and contrast levels, so viewers can enjoy more realistic highlights and deeper shadows. Meanwhile, Samsung’s Smart TV platform provides convenient access to streaming services, gaming features, and smart home integration from a single interface. The slim and modern design complements any living room setup while maximizing screen space. Overall, the Samsung 65-Inch OLED Smart TV | QA65S90FAEXTW combines premium OLED technology, intelligent processing, and smart connectivity to deliver a high-quality home entertainment experience. Specifications: OLED technology delivers deep blacks and exceptional contrast performance 65-inch 4K UHD display provides sharp and detailed visuals AI-powered processing enhances picture quality and content clarity HDR support improves brightness, contrast, and color accuracy Smart TV platform offers streaming apps and connected home features
Arabic Silicone Keyboard Skin Cover for MacBook Pro 13" A1708 Without Touch bar and MacBook 12" A1534 with Retina Display US Layout (Black) Arabic Silicone Keyboard Skin Cover for MacBook Pro 13″ A1708 Without Touch bar and MacBook 12″ A1534 with Retina Display US Layout (Black) About this item Arabic language silicone keyboard skin, US version, perfect fit for your MacBook 12″ A1534, which was released in 2015 & new MacBook Pro 13-Inch 13″ Model A1708 without/no Touch Bar, which was released in 2016; Do not fit for Europe Version MacBook Handmade Skin – XSKN is the original Manufacturer of these “Keyboard Art Skin” silicone covers. They are durable, thin and soft with a cashmere feel. The keys fit snug over the keyboard, smooth surface treatment, suit for regular laptop user who types a lot and quickly Each XSKN silicone skin is heat molded to ensure, each color is paints taking hand screened using silicone paint which is heat fuses into the silicone keyboard skin to become one, making it Soft, ultra-thin, durable and easy to washable High quality silicone raw material assure no extension with longtime using. Every detail clearly prinited, imported ink keep it looking good, rubber coating help to remain in good condition Aside from being beautiful they protect your keyboard from spills, crumbs, animal hair and dust. Washable, can be cleaned easily
Used OEM Original Apple Logic Board Working, A1706 Late 2017 Mode 3.3 GHz i7 256gb 16gb RAM Tested using latest industry hardware diagnostic software, Fresh pull from full unit.
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
The ViewSonic VG2709-MHU 27″ FHD 75Hz Monitor delivers clear and sharp images for work, study, and daily tasks. Its Full HD resolution shows text and pictures with good clarity. The 27‑inch size gives you enough space to multitask comfortably. This makes work and browsing easier. Moreover, the ViewSonic VG2709‑MHU uses a SuperClear IPS panel for wide viewing angles and consistent color. Colors stay true from the sides without fading or distortion. This helps photos, videos, and graphics look natural and smooth. Even large spreadsheets or documents remain easy to read. In addition, the monitor features a smooth 75 Hz refresh rate. This makes motion feel smoother than standard 60 Hz screens. Scrolling, video playback, and light gaming feel more fluid and comfortable. This reduces motion blur during everyday use. Furthermore, the ViewSonic VG2709-MHU includes eye‑care technology for long hours of work. It offers Flicker‑Free display and a Blue Light Filter to help reduce eye strain. This helps your eyes stay comfortable during long sessions. Also, the monitor offers good connectivity with HDMI, VGA, and USB‑C (with 65W power delivery) ports. This makes it simple to connect laptops, desktops, or other devices quickly. The built-in speakers add convenience for calls, videos, or basic media without extra audio devices. Also the design of the ViewSonic VG2709‑MHU is ergonomic and adjustable. You can tilt, swivel, pivot, and adjust height to find a comfortable view. Overall, the ViewSonic VG2709-MHU 27″ FHD 75Hz Monitor combines clear visuals, smooth performance, eye comfort, and flexible connectivity. It improves productivity, browsing, and light media or gaming. It is a great choice for students, professionals, and everyday users who want a dependable and comfortable display. Specifications: Display : 27″ IPS Resolution : FHD Refresh Rate : 75Hz Response Time : 5ms
The Asus TUF Gaming VG24VQER 24″ FHD 180Hz Curved Monitor offers smooth and responsive gameplay. It delivers sharp Full HD visuals with strong clarity. The curved screen pulls you into the action. This creates a more immersive gaming experience. Moreover, the Asus TUF Gaming 24″ FHD 180Hz Curved Monitor features a fast 180Hz refresh rate. This reduces motion blur during fast scenes. It also improves reaction time in competitive games. Every frame appears clean and stable. In addition, the monitor includes Adaptive Sync support. This helps remove screen tearing and stuttering. Your gameplay stays smooth even during heavy movement. This makes every moment feel more controlled. Furthermore, the Asus TUF Gaming VG24VQER 24″ FHD 180Hz Curved Monitor offers a curved VA panel. The colors look rich and deep on the screen. The contrast levels stay strong during dark scenes. This enhances your overall viewing quality. Also, the monitor features eye-care technology. It reduces blue light and screen flicker. This helps protect your eyes during long gaming hours. You can play or work more comfortably. The design of the Asus TUF Gaming 24″ FHD 180Hz Curved Monitor looks modern and clean. The stand feels stable and adjustable. You can tilt the screen for better viewing comfort. This makes it great for gaming desks and home setups. Overall, the Asus TUF Gaming VG24VQER 24″ FHD 180Hz Curved Monitor delivers smooth motion, bright visuals, and immersive gameplay. It offers strong performance for competitive players. It is an excellent option for gamers who want speed, comfort, and quality in one monitor. Specifications: Display : 24″ VA Resolution : FHD Refresh Rate : 180Hz Response Time : 1ms Curvature : 1500R
NETIS ST-3108 8-Port Fast Ethernet Switch Network Desktop Hub Retail Eight (8) 10/100Mbps RJ45 ports, Auto-Negotiation & Auto MDI/ MDIX IEEE 802.3x flow control for Full Duplex mode and back pressure for Half Duplex mode 1.6Gbps switching fabric capacity/backplane bandwidth Green Ethernet technology for effective power saving LED indicators for simple diagnostics and management Plug and play, no configuration required Compact plastic case, desktop design for home and office use Interface: 8* 10/100M TX ports LED: PWR, 1-8 Cabling Type 10Base-T:UTP Cat.3 or up, 100Base-TX:UTP Cat.5 or up Standard: IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX,IEEE802.3ab 1000Base-T Access Method: CSMA/CD Transmission Method: Store and Forward Data Transmission Rate: 10/100Mbps(Half-duplex), 20/200Mbps(Full-duplex) MAC Address Table: 1K Operating Temperature: 0-40C Storage Temperature: -40, 70C Operating Humidity: 10%-90%RH non-condensing Storage Humidity: 5%-90%RH non-condensing Input: 100-240V 0.2A 50/60HZ Output:DC 9V/500mA
The Apple 240W USB-C Charge Cable (2 m) is a durable, braided USB-C to USB-C cable that supports fast charging up to 240W and USB 2.0 data transfer—ideal for powering high-performance MacBooks and other USB-C devices. Length: 2 meters Connector: USB-C to USB-C Power Support: Up to 240W (48V/5A), compatible with the new USB-C PD 3.1 Extended Power Range standard Data Transfer: USB 2.0 speeds (up to 480 Mbps) — this cable prioritizes power delivery over high-speed data Ideal for charging MacBook Pro (2021 and later), MacBook Air (M2 and later), and other high-power laptops Backward-compatible with lower-wattage devices (iPad, iPhone 15 lineup, etc.) Works with any USB-C power adapter, but you’ll only get full 240W output when paired with a compatible high-wattage charger The standard USB-C Charge Cable (2 m, 60W/100W) only supports up to 100W. The Thunderbolt 4 Pro Cable (3 m) supports high-speed data (40 Gb/s) and video output, but maxes at 100W charging. This 240W version is the one to get if your priority is maximum charging power rather than data/video.
A high-end pre-owned HP ZBook Fury G8 mobile workstation with 17.3" display, Intel Core i7-11850H, 64GB RAM, 512GB SSD+HDD 1TB, and NVIDIA RTX A2000 (T1200) 4GB—built for demanding engineering, design, and creative workflows.
This item is available on backorder from abroad. A 50% down payment should be transferred to confirm the order and our salesman will specify the time till arrival after confirmation. The BenQ ZOWIE XL2586X 24″ 540Hz Gaming Monitor is designed for serious gamers. It delivers ultra-smooth visuals, ensuring you never miss a moment in fast-paced games. Firstly with a 540Hz refresh rate, the BenQ ZOWIE provides incredibly smooth gameplay. This high refresh rate reduces motion blur and offers a competitive edge in gaming. Furthermore the monitor features a 24-inch screen, offering a perfect balance between size and performance. It ensures you get an immersive gaming experience without overwhelming your desk space. Moreover the BenQ ZOWIE is equipped with a fast response time. This feature ensures that your actions are reflected on-screen instantly, providing a seamless gaming experience. Also enjoy vibrant and accurate colors with the BenQ ZOWIE XL2586X’s advanced color settings. This monitor allows you to customize your display settings to match your preferences and game requirements. The ergonomic design of the BenQ ZOWIE allows for height, tilt, and swivel adjustments. This ensures you can play comfortably for extended periods, reducing strain and enhancing your focus. The BenQ ZOWIE also includes features like Black eQualizer and Color Vibrance. These features enhance visibility in dark scenes and adjust color settings to your liking. In conclusion, the BenQ ZOWIE XL2586X 24″ 540Hz Gaming Monitor is a top choice for gamers seeking superior performance. Upgrade your gaming setup with the XL2586X and experience the next level of competitive gaming. Specifications: Display : 24.1″ Fast TN Resolution : 1920 x 1080 Refresh Rate : 540Hz
