This part is a kind of semiconductor called JST1151.

Function of this product has Transmitter / Receiver.

Manufacturers : Solteam

Image and pinout :

Some of the text within the PDF file :

JST1151/JSR1151 Plug type Screw use holder Offer TX/RX (Transmitter / Receiver) 16/25/50 Mbps optical transmitting option Application: DVD Player, audio amplifier [ ... ]

JST1151 PDF Datasheet Download