Black Box MultiPower Miniature Fast Ethernet Media Converter - fiber media converter - 10Mb LAN, 100Mb LAN

These Miniature Media Converters makes it easy to bring fiber to the desktop. Just connect it to your PC's copper port with a CAT5 cable, then connect a fiber cable to the converter's other side. That's all there is to it! Best of all, you can tuck this tiny converter unobtrusively behind your PC.

These converters not only link 10- and 100-Mbps segments to fiber cabling, they also work as a data rate converter, performing 10/100 autonegotiation on the twisted-pair port.