Tripp Lite B042-008 8-Port 1U Rackmount USB PS2 KVM Switch with On-Screen Display Controls an entire network from one keyboard, mouse and monitor in 1U Controls up to 248 computers/servers by daisy-chaining multiple KVM switches Supports QXGA video resolutions up to 2048 x 1536 Compatible with PS/2 and USB computers and servers 1-year warranty 3-year limited warranty NetController 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 Standard 19 Rackmount size - hardware included On-Screen Display (OSD) menu for intuitive operation and easy control Compatible with all major operating systems Constructed of heavy-duty steel housing