This is an Epson HX-20, a very early laptop computer.

Under a cover on the back is a set of sockets for adding memory and custom programs. This particular model has a custom EPROM from Skisoft, Inc. for "Skywriter", dated 1983.

I need an AC adapter model H00AAA in order to test this machine. It probably also needs replacement rechargeable batteries. Any leads?

This laptop has an add-on device called "RealVoice". Is anyone familiar with this module?