Three Icron Ranger 2324 - USB 2.0 Fiber Optic Extenders. $5 each.
1G SR Optics over Multimode Fiber (MMF) Local EXtender (LEX) units. The Icron USB 2.0 Ranger 2324 (00-00411 or RG2324) extends high-speed USB 2.0 connections at up to 480 Mbps over 500m (1,640 ft) of OM2 fiber optic cable and is plug and play - no software drivers required - for all major operating systems: Windows, macOS, and Linux. This FCC/CE Class B certified, USB 2.0, multimode fiber extender with ExtremeUSB is perfect for: keyboards, mice, interactive white boards, flash drives, hard drives, audio devices, USB 2.0 web cameras and any other USB 2.0 or 1.1 device. Includes the JDSU 1G (1000BASE-SX) SFP SR optical modules (64P0271). Includes the three USB cables to connect the LEX to your computer (laptop/desktop). Does not include any of the quad USB port Remote EXtender (REX) units. Uses LC optical fiber connector. See https://www.kvm-switches-online.com/00-00411.html for more info on the LEX units.