What is this? :)

[MoNk]

http://www.ccxcorp.com/images/ftrj_8519_7d25.jpg

Thanks nerds ;)

[Scorched]

The device is a Short-Wavelength Pluggable SFP Transceiver which is generally used for either 1.25Gb/s 1000Base-SX Ethernet or 1.0625Gb/s Fibre Channel in a SAN environment.

[MoNk]

Do you know what it does? :) That's what I was after, I should have been more specific.

[Scorched]

They are small Serial to Serial, hot swappable modules used to provide the media interface (copper or fibre)
The one you pictured above is a Fibre SFP.

Basically this device plugs into a port on a device (Switch generally) and extends the max distance between 2 devices while maintaing Gigabit speeds.

Your SFP will allow Gigabit speeds up to 500 Meters.

A Long Wave Laser GBIC or SFP - Up to 10 Kilometers
A Extended Long Wave Laser GBIC - Up to 80 Kilometers

[MoNk]

Sweet, thanks for that Scorched. I thought a booster of some kind, but that clears it up well. Thanks for the good description :).