Level 1 KVM-0420 4-Port PS2/USB Rackmount KVM Switch with

Key features:
For PS2 & USB platforms mixed together
1-to-2 for USB unique cables eliminates tangled
Maximum of 4 KVM cascadable
1U-height, 19" saves rack spaces
Auto-scan function automatically selects computer sequentially
Supports Microsoft IntelliMouse (Pro)
Assigns computers with unique and meaningful names
Identifies and selects computers by the names
Programmable scan filters unused computers
Store system settings and name entries to non-volatile memory
Password security locks computer from unauthorized access
Gains complete control with easy-to-use OSD interface
Hotkey functions allow easily computer access
Keyboard states automatically saved and restored when switching computers
Operating system is independent and transparent to all applications
Plug-and-play system configuration
Keyboard and mouse can be hot plugged at any time
DDC2B compatible