Dell Latitude XPi

Known Sub-models: P75D, P75T, P90D, P90T, P90ST, P100SD, P120D, P120T, P120ST, P133ST

Desktop Replacement laptop, originally released in 1995. The XPi replaced the 486-based Latitude XP, keeping a similar design but with redesigned internals including a Pentium processor. There were several sub-models, and I don't think I have them all right now.

Sound Cards

Bizarrely, Dell released the XPi without a sound card. This was very strange for a high-end laptop released in 1995. They did eventually add sound later on with models P100SD and P133ST. Those two are the only XPis with sound.

Power Supplies

Despite what some sources say online, the XPi does NOT use the same power supply that the Latitude CPi and other C-Series Latitudes do. The plug looks very similar, but the voltage is different to what the C-Series laptops use, and the charger for one will not fit. See the specs table for correct part numbers.

It is possible however to modify the plug on the XPi so that a later PA-2 or PA-6 charger for the Latitude C-Series will fit. Despite the small voltage difference, this does work.

Specifications

Spec	All other models	P100SD and P133ST
CPU	Intel Pentium @75, 90 or 120MHz	Intel Pentium @100 or 133MHz
RAM	- 8MB Standard - 40MB Maximum	- 8 or 16MB Standard - 40MB Maximum
Hard Disk	2.5" IDE - Uses proprietary connector - 524, 540, 810MB, or 1.2GB Standard	2.5" IDE - Uses proprietary connector - 810MB Standard
Display Options	- 10.4" Passive Matrix Color @640x480 - 10.4" Active Matrix Color @640x480 - 10.4" Active Matrix Color @800x600	- 10.4" Passive Matrix Color @800x600 - 11.3" Active Matrix Color @800x600
GPU Options	Cirrus Logic CL-GD7543 w/ 1MB VRAM	NeoMagic MagicGraph 128 (NM2070) w/ 896KB VRAM
Audio	PC Speaker Only	ESS AudioDrive 1888
Main Battery	Lithium Ion
CMOS Battery	Saft 6-cell NiCad
Power Supply	Latitude XPi 3-pin - Dell PA-1 (81407) - Dell ZVC65N-18.5-P10 (04360)
Disk Drives	3.5" 1.44MB Floppy Drive
PC Cards	2x PCMCIA Slots
Networking	None
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 Line Out - 1x Line In - 1x Mic In
BIOS	Dell BIOS (Phoenix-based)
Pointing Device	Trackball

Sub-Model Number Decoding

See example below.

Another example: P75D is a Pentium non-MMX laptop clocked at 75MHz with a VGA (640x480) DSTN/Passive Matrix display.

Resources

Drivers

Common Faults & Maintenance

CMOS Battery Leaks

The Saft NiCad CMOS battery that the XPi uses is highly prone to leaking and should be removed from every unit to prevent damage.

Hinge Failure

The XPi's hinges fail far less often than many other laptops of its time, but it still does happen. Reinforcement may be required, and the plastics are brittle.