Looks like an RJ45, see through, with 5 cables going into connectors (red, black, blue, white,silver)
I`m guessing that Red = Vcc, Black = Gnd, Wht = Output/Tx, Blue = Rx?/Clock?, Silver = Shield?
and that output will be a TTL data stream on white.
and use the PS2 library to decode the stream?
I did some measurements on the connections using the meter Diode function.
Diode Test on Meter
Red + White - 1316
Red - White + 574
Red + Black - 1326
Red - Black + 1360
Red + Shield - 1315
Red - Shield + 575
Black - White + 1579
Black + White - 1938
Black - Shield + 1579
Black + Shield + 1938
White + Shield - 001
White - Shield + 001
Blue wire has no connection and is OC.
I would have expected Red and Black to be power, with the white wire to be (TTL) output.
But it appears from the above connections that white is connected to shield, which makes no sense to me.