The Compaq Portable III is a PC / AT compatible computer released by Compaq Computer Corporation in 1987. It was announced to be much smaller and lighter than previous x86-PC notebooks, but it was still quite large by today’s standards . Its selling price was 4999 USD for a model equipped with 12 MHz Intel 80286, 640 KB of RAM, 1.2 MB of 5.25 “floppy disk, 20/40/60 MB of hard disk, and a 10” plasma gas screen amber color or 5799 usd with the updated 40 MB hard drive.
There was also an optional ISA expansion chassis for 2 full-length 16-bit ISA expansion cards for $ 199. The power is supplied by means of a socket, no battery exists.