This is FEIG ID ISC.MRMU102-A UHF Reader Module (RS232, USB) # 3779.000.00, with power supply 9999.220.00.
This module receives power on a 2 pin molded connector. The mating part is Molex 22-01-3027 with pins 08-50-0114. Power cannot be fed on the RS232 port of this reader and it will not operate on USB bus power.
GlueLogix can quote the module without power supply and in greater quantities.
Description from the FEIG UHF page at GlueLogix.com:
This is the bare board version of the fixed MRU02 shown below. It has higher power and sensitivity than the MU02, and is classed by FEIG as a Medium Range reader.