A *new* piece of PC-E kit?

I'm hopeless with the French language, but from the few things I can understand
this looks *very* interesting! ....

http://pceteikoku.consolemul.com/test%20pce-pro.htm

USB port? It sounds like a somewhat recent bit of kit, rather than a 
development tool from during the actual days of the PC-Engine (Which I imagine would have
used EEPROMs?).

-John