In addition to its PC-compatible transportable, Colby produced conversion kits that would let you turn any desktop PC into a portable computer.
Colby PC-3 (1984, transportable PC)
Original Retail Price: $2,795 Base Configuration: MS-DOS, three ISA slots, 128K RAM (1MB max), two 5.25-inch floppy disk drives, integral 9-inch monochrome CRT, keyboard/keypad, serial and parallel ports
Video: 25-line x 80-column text
Size/Weight: 8.5 x 16 x 16.5 inches, 26 lbs.