Geniune Original CISCO GLC-SX-MM 30-1301-04 Optical Transceiver module /1.25Gb/s/850nm/550M. Distance: 550M. Wave length: 850nm. The 1000BASE-SX (short wavelength) GBIC module operates on standard multi-mode-optic link spans of up to 1804 feet (550 m).
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