This device allows you to connect one toslink optical digital audio source device to two different receiving devices such as a A/V receiver and a television. This adapter is designed to split a single signal into two. It will not combine two signals into one. It is generally a one direction adapter.
If you need to have two source devices go into a single input on a reciever, then you need a switch. In that case try PID# 2946.
*NOTE - Customers which have already purchased this Product : This splitter must have all cables connected to match. If you notice all optical cables have a flat side (typically top) and grooved side (typically bottom). Make sure the cables on both inputs and outputs are all lined up. If you have a toslink cable upside down, while another cable is right side up, it will not work.