Gigabit Interface Converters (GBIC) for Fibre Channel/Storage Applications

"The HFBR-56xx/HFCT-56xx family of interface converters meet the Gigabit Interface Converter specification Rev. 5.4. The family provides a uniform form factor for a wide variety of standard connections to transmission media. The converters can be inserted or removed from a host chassis without removing power from the host system.
The converters are suitable for interconnections in the Fibre Channel mass storage and data transfer environment. The design of these converters is also practical for other high performance, point-to-point communication requiring gigabit interconnections. Since the converters are not-pluggable, they allow system configuration changes or maintenance simply by plugging in a different type of converter."