Cisco 1000BASE- LX/LH SFP Transceiver Module, Model: (GLC-LH-SMD). COMPATIBILITY: 1000BASE-LX/LH SFP is designed for long-reach single-mode fibers but works over multimode fiber as well. HOT SWAPPABLE: Plugs into an Ethernet SFP port or slot with no need to power down if installing or replacing.
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