RE:Psvr more info from cables This is the juicy bit which may be missed in the denser post below. Sure sounds like S7.
https://iwagglevr.com/2016/03/gdc-2016-playstation-vr-whats-box/
[7] VR headset connection cable
This “two headed” cable is kind of like an extension cord as it connects the cable coming from the HMD to the Processor Unit through a little, flat connector. The two “heads” are actually an HDMI port and an AUX port, the former feeding the HMD panel with juicy stereoscopic virtual reality awesomeness at up to 120Hz, the latter transmitting ready-to-be-enjoyed 3D audio in one direction and HMD sensor data plus voice chat coming from the HMD in the other.
The AUX cable does also power the HMD itself.
Here is more on the PSVR. Sure suggests S7 cables!
https://www.techradar.com/us/reviews/gaming/playstation-vr-1235379/review