MiTAC 3025 Series
The MiTAC 3025 Series are 386-based laptops that were initially released in 1991. There were three models in the series - the 3025D and 3025E, which were released in around June 1991, and the 3025F, which was released around April 1992. They are all mostly identical aside from CPU clock speed. The only other difference is that the 3025E and 3025F have a built-in modem and scanner port, while the 3025D doesn't.
Specifications
| Spec | 3025D | 3025E | 3025F |
|---|---|---|---|
| Release Date | ~June 1991 | ~April 1992 | |
| CPU | CPU Type: Unknown Intel 386SX @16MHz - 387 Coprocessor Support | CPU Type: Unknown Intel 386SX @20MHz - 387 Coprocessor Support | CPU Type: Unknown Intel 386SX @25MHz - 387 Coprocessor Support |
| Chipset | Headland HC21 | ||
| RAM | Type: SIPP Memory Standard: 1MB Maximum: 5MB | ||
| Storage | 2.5" IDE Requires Adapter: Unknown Standard: 20, 40, 60, or 80MB | ||
| Display Options | 8.5" Passive Matrix Grayscale (16 shades) LCD @640x480 | ||
| Graphics Chipset | Cirrus Logic GD610/GD620 VRAM: 256KB | ||
| Audio | PC Speaker | ||
| Main Battery | NiCad | ||
| CMOS Battery | Lithium | Unknown | |
| Power Supply | Mini-DIN | ||
| Media Drives | 3.5" 1.44MB Floppy Drive (Ctizen U0DA) | 3.5" 1.44MB Floppy Drive | |
| PC Cards | None | ||
| Networking | None | Modem | |
| Other I/O | - 1x Parallel - 1x Serial - 1x VGA Out - 1x PS/2 - 1x Dock Connector | - 1x Parallel - 1x Serial - 1x VGA Out - 1x PS/2 - 1x Dock Connector - 1x Scanner Port | |
| BIOS | Phoenix | ||
| Pointing Device | None | ||
Resources
All of the following is for the 3025D/3025E, but most can be applied to the 3025F as well.
 Service Manual |
Service Manual (Alt) |
 Motherboard Schematic |
AC Adapter Schematic |
AC Adapter Pinout |
|---|
Page last updated (MM/DD/YYYY): 04/07/2025
Update Reason: page created
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