HP Gbic available from Acumen Technologies
J4858C HP Networking x121 GigabitSXLC MiniGBIC  .

 
Connectivity
Cabling distance (maximum)
2-220 m (62.5 µm core diameter, 160 MHz*km bandwidth), 2-275 m (62.5 µm core diameter, 200 MHz*km bandwidth), 2-500 m (50 µm core diameter, 400 MHz*km bandwidth), 2-550 m (50 µm core diameter, 500 MHz*km bandwidth)
Ports
Ports
1 LC 1000Base-SX port(IEEE 802.3z Type 1000Base-SX), Duplex: full only
 
 
Weight 0.04 lb.
Dimensions (W x D x H) 2.24 x 0.54 x 0.486 in