However, its mainboard did not have a slot for the optional Intel 8087 math coprocessor due to space constraints.

Like the original Macintosh, HP-150 was packaged with the CRT display as a single unit, and made use of 3½-inch floppy disks.

Invisible to the user, the HP-150 runs "Terminal Operating System" ("TOS", code-named "Magic" during development).

This operating system generally runs only two tasks: the terminal emulator and MST (which is Microsoft DOS).

In 1985, HP introduced the Vectra, which InfoWorld stated was the company "responding to demands from its customers for full IBM PC compatibility".