Trouble-free operation over 12.5 m

The cable is a physically remote PC (through next room). Meanwhile Toslink output goes to the control unit of Logitech 5.1 speaker system. The connection worked right away. Of the same way I use two cables with 5 m and a 1 meter - also without problems. From me, there are five stars for the quality of workmanship, the competitive price and fast delivery.
deleyCON Premium HQ Optical Audio Cable - 2x Toslink plug - [12.5m] - Digital optical fiber cable