Black Box ServSwitch Wizard DVI Dual-Link (USB), 4-Port or 8-Port KV2004A

The ServSwitch Wizard™ DVI Dual-Link (USB) 4-Port or 8-Port has breakthrough USB True Emulation technology. This ensures that the full characteristics of the connected USB peripherals-including keyboards and mice-are passed to every system, so specialized features are quickly recognized on the attached devices. What's more, each computer retains this information, even if the device is plugged into another computer. Because of this technology, the switch avoids many of the limitations found in traditional emulations, enabling instantaneous switching and hotkey support.
You can switch up to four or eight PCs via hotkeys, mouse, or RS-232/V.24. The switch provides resolutions up to 2560 x 1600 or 2048 x 2048 at 60 Hz. Plus, it supports duallink DVI-D, single-link DVI-D, and VGA.
Intelligent options port
Flash upgrade the ServSwitch Wizard DVI Dual-Link (USB) via its intelligent options port. You can also switch it via simple RS-232 protocol or even dry contacts. When linked with another ServSwitch Wizard, the options port can be used for synchronous switching of multiple video heads.
USB 2.0 transparency
A clever architecture combines transparent USB 2.0 protocol with emulated keyboard and mouse control. To support this, there are two dedicated keyboard/mouse ports

• Stereo audio switches independently from the video signal
• Switched synchronously with other ServSwitch Wizard switches via the options port
• Supports dual-link DVI-D, single-link DVI-D, and VGA
• True DDC EDID support
• Support for DVI resolutions up to 2560x1600 at 60Hz. and VGA resolutions up to 1920x1200
• Switch ports using front push buttons, mouse, and keyboard hotkeys
• Access up to four computers that support DVI-I video, USB keyboard and mouse, and analog audio
• Enables to switch up to four computers