Compaq Portable II
| A Compaq Portable II with an aftermarket 3.5" floppy drive replacing the 5.25" floppy drive and cover over the drive it came with. | |
| Manufacturer | Compaq Computer Corporation, United States | 
|---|---|
| Type | Portable computer | 
| Release date | February 20, 1986 | 
| Introductory price | US$3,499 (equivalent to $10,040 in 2024) | 
| Operating system | MS-DOS 3.1 | 
| CPU | Intel 80286 @ 6 or 8MHz (dual-speed) | 
| Memory | 256 KB – 640 KB | 
| Storage | 360 KB 5.25" floppy drive optional 10MB hard drive | 
| Display | 9" Monochrome monitor | 
| Graphics | 720×350 (text mode), 640×200 (graphics mode) | 
| Sound | PC speaker | 
| Input | Serial mouse, 84-key keyboard, light pen | 
| Connectivity | CGA, composite, serial, parallel | 
| Dimensions | 7.5" × 13.9" × 17.7" (19.1cm × 35.3cm × 45cm) | 
| Weight | 23.6 lbs (10.7 kg) | 
| Predecessor | Compaq Portable 286 | 
| Successor | Compaq Portable III | 
The Compaq Portable II is the fourth product in the Compaq Portable series to be brought out by Compaq Computer Corporation. Released in 1986 at a price of US$3499, the Portable II much improved upon its predecessor, the Compaq 286, which had been Compaq's version of the PC AT in the original Compaq Portable chassis; Portable 286 came equipped with 6/8-MHz Intel 286 and a high-speed 20 MB hard drive, while the Portable II included an 8 MHz processor, and was lighter and smaller than the previous Compaq Portables. There were four models of the Compaq Portable II. The basic Model 1 shipped one 5.25" floppy drive and 256 KB of RAM. The Model 2 added a second 5.25" floppy drive and sold for $3599. 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. The Model 4 would upgrade the Model 3 with a 20 MB hard drive and sold for $4999. There also may have been 4.1 MB of RAM included at one point. The Compaq Portable II was significantly lighter than its predecessors, the Model 1 weighed just 23.6 pounds compared to the 30.5 pounds the Compaq Portable 286 weighed. Compaq only shipped the system with a small demo disk, MS-DOS 3.1 had to be purchased separately.
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. There were no recorded injuries. The Compaq Portable II was succeeded by the Compaq Portable III in 1987.