Programmer transceivers GBIC, SFP, SFP+
Programmer (test board) modules GBIC, SFP, SFP+ (for transceivers that are not protected against changes in the firmware)
Programmers transceivers GBIC, SFP, SFP+ can improve hardware compatibility with Cisco, Intel, HP (HP Procurve), Juniper, Extreme, Brocade, Moxa, Alcatel, 3com, Nortel, AT, etc...
Programmers allow you to reprogramming primarily Chinese OEM optical transceivers.