The CE690 is a DVI Optical KVM Extender that overcomes the length restrictions of standard DVI cables by using fiber optics to send high definition audio, video and control signals over long distances. The CE690 can transmit KVM DVI signals extremely long distances - up to 20 km away from the source. The extender takes audio/video streams from the local source and serializes the data to pass it over a single 3.125 Gbps optical link, for resolutions up to 1920 x 1200 @ 60Hz, 24-bits, with picture perfect quality.In addition to extending keyboard and mouse control, the CE690 also transfers RS-232 signals (up to 115 kbps) and USB signals in both directions, with ports for both, allowing you to connect serial devices, such as barcode scanners; or USB devices such as touchscreens, which can provide access to a computer connected at the local site - up to 20 km away. The CE690 allows access to a computer from both the local and remote consoles (USB keyboard, monitor, and mouse). Furthermore, the CE690 takes advantage of the newest fiber optic cable technology to connect the local and remote units; providing easy installation and an extremely long 20 km extension of KVM DVI signals.