Tripp Lite 8-Port 1U Rack-Mount USB/PS2 KVM Switch with On-Screen Display Tripp Lite\'s Net Controller 8-Port, 1U rackmount KVM Switch is an affordable, highly-flexible enterprise class KVM Switch, which allows the user to connect either USB or PS/2 keyboards and mice. In addition, P780-Series USB/PS2 combo KVM cable kits allow you to connect either USB or PS/2 computers, without the need to purchase separate cables or adapters. Control up to 8 directly connected computers, or expand the number of connected computers to up to 248 by daisychaining up to 15 additional B042-Series KVM switches. Switch between connected computers via the On-Screen Display (OSD), pushbuttons, or keyboard hotkey commands. Other features include: password protection, auto-scanning, auto-logout, firmware upgrade and video support up to 2048 x 1536 (QXGA). Mounts easily in a standard 19\" rack/cabinet and includes all necessary mounting hardware. Compatible with all major operating systems. Constructed of heavy-duty steel housing. Net Controller 8-Port, 1U rackmount KVM switch Control 8 computers via a single VGA monitor and USB or PS/2 keyboard/mouse P780-Series USB/PS2 combo KVM cable kits allow you to connect either USB or PS/2 computers, without the need to purchase separate cables or adapters Control up to 248 computers by daisychaining up to 15 additional B042-Series KVM switches Allows for easy customization of ports by daisy-chaing any combination of B042-Series KVM\'s (4-, 8- or 16-port) Standard 19\" Rackmount size - hardware included On-Screen Display (OSD) menu for intuitive operation and easy control Switch between connected computers via the On-Screen Display (OSD), pushbuttons, or keyboard hotkey commands Supports video resolution up to 2048 x 1536 Password protection and auto-logout features Firmware upgradeable Robust metal case design ensures best EMI/RFI shielding and video quality Hot-swappable: disconnect and reconnect USB computers without rebooting Supports standard 5-button