[3] The Model 3 shipped with a 10 MB hard disk in addition to one 5.25" floppy drive and 640 KB of RAM for $4799 at launch.

[3] Compaq only shipped the system with a small demo disk, MS-DOS 3.1 had to be purchased separately.

[3] There are at least two reported cases of improperly serviced computers exploding when the non-rechargeable lithium battery on the motherboard was connected to the power supply.

The Compaq Portable II had room for additional after-market upgrades.

[4] With 640 KB installed on the motherboard and both the ISA card and the expansion board, the computer could be upgraded with up to a maximum of 4.125 MB of RAM.