6 Channels 3G SDI over Fiber Extender with USB 3.0 port

Somebody know the application of 6 Ch 3G SDI over Fiber Converter with 1 port USB 3.0?   this is our customerized product,   please kindly check the below photo,   for more,   please visit https://www.transwan.com.cn/.../12g-sdi-over-fiber-extender   or transwan@vip.163.com