Toshiba T4400SX
The Toshiba T4400SX is a 486-based laptop that was released in February 1992. This model is notable for being the only notebook-sized computer that I know of to use a Gas Plasma display. Plasma display panels were usually very bulky and used a lot of power, meaning that they only ended up in luggable-sized laptops, unlike the T4400SX which is very portable. The Plasma display was optional in this laptop, with non-plamsa units using a more typical STN grayscale LCD. Plasma units were labelled as "T4400SXP" on the bottom sticker. They still just say T4400SX elsewhere. This was also Toshiba's last laptop to use a plasma display.
Specifications
| Spec | T4400SX | T4400SXP |
|---|---|---|
| Release Date | February 1992 | |
| CPU | CPU Type: Unknown Intel 486SX @25MHz | |
| Chipset | Toshiba GA-SYS CNT | |
| RAM | Type: Unknown Standard: 2MB Maximum: 10MB | |
| Storage | 2.5" IDE Requires Adapter: Unknown Standard: 60 or 80MB | |
| Display Options | 9.5" Passive Matrix Grayscale LCD @640x480 | 9.5" Gas Plasma Display (16 shades) @640x480 |
| Graphics Chipset | Western Digital WD90C23 VRAM: 256KB | |
| Audio | PC Speaker | |
| Main Battery | NiCad | |
| CMOS Battery | Unknown | |
| Power Supply | Unknown | |
| Media Drives | 3.5" 1.44MB Floppy Drive | |
| PC Cards | None | |
| Networking | Modem (Optional) | |
| Other I/O | - 1x Parallel - 1x Serial - 1x VGA Out - 1x PS/2 - 1x Keypad Port | |
| BIOS | Toshiba | |
| Pointing Device | None | |
Resources
 Service Manual |
|---|
Page last updated (MM/DD/YYYY): 03/10/2025
Update Reason: page created
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