ieGeek USB KVM Switch Box + VGA USB Cables for PC Monitor/Keyboard/Mouse Control (4 Port) 4 PORT USB KVM SWITCH-- Allows you to connect 4 computers to one single monitor, with the KVM switch box + one set of key board and mouse, you can switch between/operate 4 computers on one monitor, No more hassle to swing your chairs at work, great choice for muti tasks control VGA USB KVM SWITCH -- Come with 4 VGA USB cables, easy installation, no power supply needed, power from computer via USB cable, Plug and play, no software required, push button to switch computers, with LED indicates the active computer KVM BOX WITH WIDE COMPATIBILITY -- Compatible with 98/98SE/2000/ME/NT/XP/VISTA/XP 64bit/Vista 64bit/Win 7 32bit/Netware/Unix/Linux/Mac, Support resolution up to 1920 x 1440, ensures Clear & Stable Image Quality KVM SWITCH WITH USB 2.0 PORT -- USB 2.0 enables sharing more Peripheral USB connecting device like as printer, scanner, flash drive,USB hub and more. WARRANTY AND TECH SUPPORT-- ieGeek offers you 30 days free return, 12 month money back warranty, lifetime technical support. Any problem? need help? Contact us any time, any query will be responded less than 24 hours