The OmniBook 4000C and 4000CT are 486-based laptops that were released in early 1995. Per my information, they were a modified version of the Twinhead Slimnote 5.
Spec | Details |
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CPU | CPU Type: Unknown - Intel 486DX2 @50MHz - Intel 486DX4 @75 or 100MHz |
Chipset | Unknown |
RAM | Type: Unknown Standard: 4 or 8MB Maximum: 32MB |
Hard Disk | 2.5" IDE Uses proprietary adapter?: Unknown Standard: 260, 340, or 520MB |
Display Options | - 10.3" Passive Matrix Color @640x480 - 10.4" Active Matrix Color @640x480 |
Graphics Chipset | Western Digital WD90C24 VRAM: 1MB |
Audio | ESS AudioDrive 688 - Stereo Speakers - Microphone |
Main Battery | NiMH |
CMOS Battery | Unknown |
Power Supply | Barrel Jack |
Disk Drives | Modular bay holds 3.5" 1.44MB Floppy Drive or 2nd Battery |
PC Cards | 2x PCMCIA Slots |
Networking | None |
Other I/O | - 1x Parallel - 1x Serial - 1x VGA Out - 1x PS/2 - 1x Dock Connector - 1x Line In - 1x Mic In - 1x Line Out - Infrared |
BIOS | HP (SystemSoft-based) |
Pointing Device | Trackball |
Service Manual |
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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.
Have additional information on this laptop? Want to send me photos to use on the site? Send me an email: macdatnet@gmail.com
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