3COM SS3 Switch 4400 100Base-LX Enables fast ethernet over fiber to be extended to at least 10Km

Product Information
Scale the performance of your Ethernet/Fast Ethernet network by adding this
module to the 3Com SuperStack 3 Switch 4400, Switch 4400 FX Switch 4400 PWR
or Switch 4400 SE 10/100 managed switch. This module provides a 100BASE-LX
fiber connection, operating over distances of at least 10km.
Provides a 100 Mbps connection over singlemode fiber, over a distance of
at least 10km to another 100BASE-LX10 device; LC connectors
Supports the IEEE 802.3ah Ethernet in First Mile over Point to Point Fiber
(EFMF) standard
Up to two EFMF links per switch, or multiple EFMF links aggregated across
a stack of switches
Inserts easily into the expansion slot at the back of the Switch 4400
Switch 4400 FX, Switch 4400 PWR, or Switch 4400 SE