|Model||HX-40 (Also PX-4)|
|Number Produced||Tens of thousands|
|Country of Origin||Japan|
|Expansion||Optional expansion for RAM, etc.|
|I/O||Cassette, optional interfaces including modems, etc.|
|OS Options||Built-in BASIC|
|Notes||The HX-40/PX-4 was the successor to the Epson HX-20. It offered more RAM, more in ROM and a tilt screen borrowed from the Epson Geneva PX-8.|
|Related Items in Collection||Epson HX-20 Portable Computer, Epson Geneva PX-8 Portable Computer.|
|Related Items Wanted||Cassette interface, additional peripherals, ROMs, manuals, software.|
The Epson HX-40 is also known as the PX-4 and was an upgrade from the wildly popular Epson HX-20 Portable Computer.
The machine in my collection works perfectly and came with several peripherals including an acoustic coupler modem and a RAM disk pack.