HP OmniBook 5500CS and 5500CT
The OmniBook 5500 Series are Pentium-based laptops that were released in May 1996. They were a modified design from Twinhead.
Specifications
| Spec | OmniBook 5500CS | OmniBook 5500CT |
|---|---|---|
| CPU | CPU Type: Unknown Intel Pentium @100, 120, or 133MHz | |
| Chipset | Unknown | |
| RAM | Type: Proprietary Standard: 8 or 16MB Maximum: 64MB | |
| Storage | 2.5" IDE Requires Adapter: Unknown Standard: 810MB, 1.35GB, or 2.0GB | |
| Display Options | 11.3" Passive Matrix Color LCD @800x600 | - 10.4" Active Matrix Color LCD @800x600 - 12.1" Active Matrix Color LCD @800x600 |
| Graphics Chipset | Chips & Technologies 65548 VRAM: 1MB | |
| Audio | Crystal - Stereo Speakers - Microphone | |
| Main Battery | Lithium Ion (14.4V, 2.5 or 3.75AH) | |
| CMOS Battery | Unknown | |
| Power Supply | Barrel Jack | |
| Media Drives | Modular Bay supporting the following: - 3.5" 1.44MB Floppy Drive - CD-ROM Drive - 2nd Battery | |
| PC Cards | 2x PCMCIA Slots (2x Type II/1x Type III) | |
| Networking | None | |
| Other I/O | - 1x Parallel - 1x Serial - 1x VGA Out - 1x PS/2 - 1x Dock Connector - 1x MIDI/Game Port - 1x Composite Out - 1x S-Video Out - 1x Mic In - 1x Line In - 1x Line Out - Infrared | |
| BIOS | HP (SystemSoft-based) | |
| Pointing Device | TrackPoint | |
Resources
 Service Manual |
|---|
Common Faults & Maintenance
These laptops seem to be fairly reliable, but they used one of the worst hinge mount designs I've ever seen, and now, like most laptops from this time, the plastics are very brittle. Due to this, all of these will suffer from hinge failure if the hinges are used. It's probably possible to fix this with enough epoxy, but I haven't gotten my hands on one yet to try and see.
Page last updated (MM/DD/YYYY): 04/03/2025
Update Reason: page created
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