ESUMIC? Antenna Wifi Extension Cable RP-SMA Female to Male Cable 7M Black Mini KVM 4-Port switch allows user to control 4 computers with one monitor, USB keyboard, USB mouse, and USB printer High VGA Resolution 1024 x 768, 1920 x 1440, 2048 x 1536. Switch between computers by clicking the button on the switch Mini and compact, easy to use and storage. Auto scan mode for monitoring PCs Powered by your cable, no external required, mini and compact, easy to use and storage Support Windows 3.x / 98 / ME / NT / 2000 / XP / Vista, Netware, Unix, Linux