Amazon.com: Transwan USB 3.0 Fiber Extender to Max 250 Meters (820 FT) Over Single-Mode Fiber with 2 x LC 10 Gbps SFP, USB 3.0 Fiber Optic Extender with 5 Gbps Super Speed,
Fibres Optic - Bridge and Repeater
POF Fiber Optic Repeater with RS232 Traffic Monitor Port, Model 4106