The GBS-7050-Z55 is a single-mode long haul (ZX) Gigabit Ethernet GBIC type optical module with 1.25G data rate and SC optical connector.
 
It operates as 1000Base-ZX standard, covering a range of 50Km over single-mode 9/125um fiber circuit. It can be used in any modern Ethernet switch equipped with GBIC slots. The optical module has been tested and found 100% compatible with various Ethernet switches from major manufacturers like: Cisco, Nortel, Extreme, ZyXEL, D-Link or Netgear.
 
Technical Specifications:

Operating media                 :SM - singlemode fiber 9/125um (50Km - distance covered)
Data rate                          : 1.25G
Optical connector               : SC
Wavelength                       :1550nm
Max. Output Power(dBm)     :   0 dBm
Min. Output Power (dBm)     :  -4 dBm
Sensitivity (dBm)                :  -23 dBm
Power budget (dB)              :  19 dB
Diode type                        :  DFB

Note: Picture is depicting the singlemode GBS-7010-L31 GBIC module, but the GBS-7050-Z55 looks identical.
All units are new. All products sold by Fiber Optic for All come with 2 years manufacturer warranty.