Cisco GLC-SX-MM, GE SFP, LC connector SX transceiver, is EOL (end of life) now, the replacement is Cisco GLC-SX-MMD, 1000BASE-SX SFP transceiver module, MMF, 850nm, DOM. The list price: US$500.00, 3Anetwork.com sells at: 71% off,US$145.00, reference: http://www.3anetwork.com/cisco-glc-sx-mmd-price_p1022.html, GLC-SX-MMD. Cisco GLC-SX-MMD is compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 µm multimode fiber links up to 550 m and on 62.5 µm FiberDistributed Data Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laser-optimized 50 µm multimode fiber cable. Although Cisco GLC-SX-MM is end of sales in Mar 2013, but still as one of the leading Cisco products wholesalers 3Anetwork.com has many GLC-SX-MMD in stock, customers can consider GLC-SX-MMD or its replacement GLC-SX-MMDD, compare to GLC-SX-MMD, GLC-SX-MMDD has DOM function.
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