D-Link

D-Link, DKVM-4U, 4-Port, USB, KVM Switch,

Socket 4kV
You can control four USB computers from one keyboard, mouse and monitor.
Supports 2048 x 1536 video resolutions (up to 400 MHz bandwidth)
Supports USB keyboard and mouse
Computer selection with buttons or hotkeys
Automatic scan mode
LED indicator for each PC
No driver required.

Save Money and Space:

With the DKVM-4U, you can control up to four computers from a single keyboard, monitor, and mouse, so you don't have to buy a monitor, keyboard, and mouse for each computer. The desktop also looks neat.

USB KVM Switch For 4 PCs:

The D-Link DKVM-4U KVM switch is a convenient device that allows you to control up to four computers with a single monitor, keyboard, and mouse. The monitor and the two input devices are directly connected to this KVM switch, not the client computer.

Easy Control:

You can quickly switch between individual client computers by pressing a button on the DKVM-4U or a hotkey on your keyboard. The KVM switch has a beep to confirm the switch and the console has an LED to indicate the PC currently servicing.

High Monitor Resolution Support.:

The DKVM-4U can support the most demanding resolutions (VGA, SVGA, multisync monitors) up to 2048 x 1536 at a refresh rate of 75 Hz (bandwidth up to 400 MHz) without significantly degrading image quality...