Dell Latitude XP
Known Sub-models: 450CX, 475C, 4100C, 4100CX, possible also 475D, 4100D, and 4100T.
Desktop Replacement laptop, originally released in 1994. The XP had 486DX4 processors and Lithium Ion batteries. There were multiple sub-models, and I don't think I have them all right now.
Models ending in "C" have a passive matrix display. Models ending in "CX" have an active matrix one.
Dell had two separate spec sheets up for the Latitude XP on their 1996 website. The first included model numbers such as 4100C and 4100CX and listed the 50MHz processor option I saw in some print ads. These are also the ones I've seen in the wild in for sale listings. The second specsheet was missing the 50MHz processor option orignally offered, had model numbers following the same scheme as the Latitude LX (475D, 4100D, and 4100T), and had Cirrus Logic video instead of Western Digital video. It's possible these were a later revision released after or alongside the XPi as a lower-end option. I have not yet seen one of these in the wild.
Specifications
| Spec | Details |
|---|---|
| CPU | - Intel 486DX2 @50MHz - Intel 486DX4 @75 or 100MHz |
| Chipset | Western Digital 8110 |
| RAM | - 8MB Standard - 40MB Maximum |
| Hard Disk | 2.5" IDE - Uses proprietary adapter - 340 or 810MB Standard |
| Display Options | - 9.5" Passive Matrix Color LCD @640x480 - 9.5" Active Matrix Color LCD @640x480 |
| Graphics Processor | Two video chips were used across revisions - Western Digital WD90C24A2 w/ 1MB VRAM - Cirrus Logic GD7543 w/ 1MB VRAM |
| Audio | PC Speaker |
| Main Battery | Lithium Ion |
| CMOS Battery | 6-cell NiCad |
| Power Supply | Barrel Jack |
| Disk Drives | 3.5" 1.44MB Floppy Drive |
| PC Cards | 2x PCMCIA |
| Networking | Unknown |
| Other I/O | - 1x Serial - 1x Parallel - 1x VGA Out - 1x PS/2 - 1x Dock Connector |
| BIOS | Dell BIOS (Phoenix-Based) |
| Pointing Device | Trackball |
Resources
 Drivers |
|---|
The video driver on this page is wrong.
Common Faults & Maintenance
CMOS Battery Leaks
I THINK the XP uses a 6-cell NiCad CMOS battery. This battery is highly likely to leak and damage critical components in the laptop. If you own an XP, it needs to be removed if it's indeed there, which I think it is.
Hinge Failure
I've seen a few XPs with broken plastic around the display hinges, as is common in 90s laptops. The plastic is likely brittle, handle these with care. They're far from the worst I've seen though, most show up for sale intact or mostly intact.
Capacitors
The Latitude XP has many surface mounted electrolytic capacitors on various boards inside, including the motherboard and components inside the screen assembly. I would highly recommend doing a full recap on one of these, as SMD caps from this time are well known to fail and leak corrosive fluid.
Gallery
No images are currently available. If you own an XP, help the site out by sending some in!
Page last updated (MM/DD/YYYY): 09/20/2024
Update Reason: pages consolidated
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