IBM ThinkPad A31 & A31p
The ThinkPad A31 and A31p are Pentium 4M-based desktop replacement laptops that were released in March 2002.
Specifications
| Spec | ThinkPad A31 | ThinkPad A31p |
|---|---|---|
| Release Date | March 2002 | |
| Discontinuation Date | January 2004 | |
| CPU Options | Type: Socket 479 (Northwood-M) Intel Pentium 4M "Northwood" @1.6, 1.8, 1.9, or 2.0GHz |
Type: Socket 479 (Northwood-M) Intel Pentium 4M "Northwood" @1.7, 1.8, or 2.0GHz |
| RAM | Type: PC2100 DDR, 2 slots Standard: 128 or 256MB Maximum: 1GB |
Type: PC2100 DDR, 2 slots Standard: 256MB Maximum: 1GB |
| Hard Disk | 2.5" IDE Uses Proprietary Adapter: Unknown Standard: 20, 30, or 40GB |
2.5" IDE Uses Proprietary Adapter: Unknown Standard: 40, 60, or 80GB |
| Display Options | - 14.1" TFT LCD @1024x768 - 15.0" TFT LCD @1024x768 - 15.0" TFT LCD @1400x1050 |
15.0" IPS (FlexView) LCD @1600x1200 |
| GPU | ATI Mobility Radeon 7500 VRAM: 16 or 32MB |
ATI Mobility FireGL 7800 VRAM: 64MB |
| Sound | AC97 - Stereo Speakers |
|
| Battery | Lithium Ion (6-cell) | |
| CMOS Battery | Lithium | |
| Power Supply | Barrel Jack | |
| PC Cards | 2x PCMCIA/CardBus Slots (2x Type II/1x Type III) | |
| Media Drives | Dual Modular Bays: - Ultrabay 2000 (left side) supports CD-ROM, CD-RW, DVD-ROM, DVD/CD-RW, DVD Multi, Floppy Drive, ZIP Drive, LS-120 Drive, 2nd HDD, or 2nd Battery - Ultrabay Plus (right side) supports any Ultrabay 2000 module, plus the Device Carrier module for WorkPad cradle or Numpad |
|
| Networking | - Modem (Optional) - 10/100 Ethernet - WiFi (Optional) |
- Modem - 10/100 Ethernet - WiFi (Optional) - Bluetooth (Optional) |
| I/O (Other) | - 1x Parallel - 1x Serial - 1x VGA Out - 2x USB 1.1 - 1x Dock Connector - 1x S-Video Out - 1x Mic In - 1x Line In - 1x Line Out - Infrared |
- 1x Parallel - 1x Serial - 1x VGA Out - 2x USB 1.1 - 1x Dock Connector - 1x S-Video Out - 1x S-Video In - 1x IEEE1394/FireWire - 1x Mic In - 1x Line In - 1x Line Out - 1x UltraPort - Infrared |
| BIOS | IBM BIOS | |
| Pointing Device | TrackPoint | |
Resources
 Service Manual |
PSREF |
|---|
Common Faults & Maintenance
The A31 and especially the A31p are both very unreliable laptops. Due to the lead-free solder plague aggravated by poor cooling, GPU failure and other types of motherboard failure are common.
Gallery
Nothing here yet. If you own a ThinkPad A31 Series laptop and would like to contribute photos, see here.
Page last updated (MM/DD/YYYY): 01/30/2025
Update Reason: page created
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