The UGREEN 4-in-1 VGA KVM Switch Box (50280) is a professional-grade hardware solution designed to declutter your workspace. By allowing a single set of controls—one USB keyboard, one USB mouse, and one VGA monitor—to manage up to four different computers, it eliminates the need for redundant peripherals and saves valuable desk space. Engineered for versatility, this KVM switch supports a wide array of operating systems, including Windows (10/8/7/XP/Vista), Mac, Linux, Sun Solaris, DOS, Win3, WINNT, Netware, and Unix. It is also fully compatible with DVRs and online gaming setups, making it an ideal choice for IT professionals, developers, and power users. Visual performance is crisp with support for Full HD 1080P resolution (up to 1920×1080 at 60Hz), with backward compatibility for 720P and 480P. While the device focuses on high-quality video transmission, audio is handled separately via the computer's 3.5mm interfaces, ensuring a clean signal path for your sound. Installation is straightforward and portable. The unit features four VGA inputs, one VGA output, four USB Type-B connectors for the host computers, and three USB Type-A connectors for your peripherals. A key design advantage is that the USB Type-B connectors provide additional power, meaning the switch box does not require an external power adapter to function. To ensure optimal performance, the device requires a direct mapping between the VGA and USB inputs (e.g., VGA IN 1 must be paired with USB B 1). The package comes complete with the KVM box and four USB Type-A to B cables, providing everything needed for an immediate setup.