StarTech.com 10/100 Mbps Ethernet to Fiber Optic Media Converter - ST Multimode - 1310nm - 2km - Full/Half Duplex (MCM110ST2) - fiber media converter - 10Mb LAN - 100Mb LAN
Amazon.com: 4 PCS USB to Ethernet Adapter, USB to RJ45 Adapter, 4Pack USB 2.0 Female to LAN RJ45 8P8C Male Crystal Ethernet 10Mb/100Mb Network Adapter : Electronics
Black Box Industrial Ethernet Extender - network extender - 10Mb LAN, 100Mb LAN - LB320A - Ethernet Adapters - CDW.com
Black Box Ethernet Extender - short-haul modem - 10Mb LAN, 100Mb LAN - LR0301A-KIT - Transceiver Modules - CDW.com
BS-RV30289 Vertical 10 / 100Mb AMDIX RJ45 Magnetic Ethernet Jack For ADSL Modems