AV Access USB Extender 165ft Over Cat5e/6,with 4 USB2.0 Ports,Plug and Play,No Driver,Supports All Operating System,Two Web Cameras Work Synchronously MAIN FUNCTION: USB Extender supports high-speed USB2.0 (Up to 480Mbps) over single Cat5e/Cat6 cable up to 165 ft(50m); Supports all operating systems (Windows, MacOS, Android, Linux); High compatibilty with USB 1.1 and USB 2.0 peripheral devices..Certificated by CE \ FCC. ADVANTAGE: Plug and Play without driver; High-speed and stable transmission for PC, PS3, Webcams, game, video conference, surveillance system etc; Supports two web cameras simultaneously; Mounting Ear for easy installation. POWER SUPPLY: Transmitter is powered by USB Host port; Receiver is powered by lockable DC 12V power adapter. NOTE: We recommend WebcamXP Pro software when connecting two webcams. DURABILITY: Built-in Surge Protection; Superior ESD Protection: +/- 8kV(Air-gap discharge) +/- 4kV(contact discharge); 1-Year Warranty and easy-to-reach friendly customer service (AV Access).