Just in case anyone is wondering, the 755 works with Windows 10 Anniversary Edition, both 32 and 64 bit.
The current configuration is 6 gig memory.
The only deficiency, and it has nothing to do with Windows 10 and is not a deficiency for most, is that the DTR and RTS lines are locked on and can not be controlled on the onboard serial port.
This only matters since I use them in an amateur radio application where they control a transmitter.
The workaround is a FTDI USB serial port which works just fine and which costs $15 at electronic distributors like Mouser and Digikey.