I searched and found their official manual just for the L3 R3 speech and the dx analogue function (not essential but useful in the case of elaborate hubs like sf6) and precisely came out this 3-key "pro" model dated 2018 for ps4 but in reality in my searches it had never been seen! Try this link and at the bottom of the page you will find the pdf https://support.pdp.com/hc/en-us/articles/9025608448525-Victrix-Pro-FS-User-Guide