4 Fort USB 2.0 Fiber Optic Extender, Also called 4 Fort USB2.0 To Fiber Converter. The device includes a transmitter and a receiver, which can extend USB 2.0 device to a remote location over 1 fiber cable, max distance 250m (SM or MM fiber cable). An integrated four port hub allows for extension of up to four USB devices without the need for an additional hub.
The device can be widely used in military command and control system, police command and control system, traffic management system, energy and electricity supply industry, government office, medical system, commercial presentation, multimedia and public utilities etc.Product feature: 
1, Max extension distance 250m (SM or MM fiber cable).
2, Single/Duplex fiber transmission, pure hardware design, no driver needed, compatible with all operation systems, support plug and play
3, Auto recognition of High-speed（25Mbps～480Mbps）、Full-speed（500Kbps～12Mbps）、Low-speed（10Kbps～1.5Mbps）USB device.
4, Support USB1.1 and USB 2.0 devices, cameras, printers, U disk, scanners, audio devices, touch screens, game controllers, mouse and keyboard, etc.

Panel diagram：

Note： The USB indicator green light flash when the device is connected well, otherwise you need to re plug USB devices.

Connection diagram: