product model: wt-10/100m product function: transmitting 10/100base-t ethernet electrical signal through fiber , multimode and single mode optional, double strand and single strand optional product characteristic: conforms to ieee802.3,ieee802.3u (10base-t, 100base-tx,100baset-fx) international standard; supports two auto-adapted ports simultaneously, one port is mdi, the other is mdi-x; brings 1m buffer, supports 2kmac address isolates network conflict and broadcasting package effectively, has the function of preventing broadcasting storm; supports 802.1q and 16groups of vlan; multi-mode connection: transmitting range can reach 5 kilometers as farthest; single-mode connection; transmitting range can reach 120 kilometers.