Dell Latitude C640 - Manual (Page 117)

Specifications
Microprocessor
System Information
PC Card
Memory
Ports and Connectors
Communications
Video
Audio
Display
Keyboard
Touch Pad
Track Stick
Battery
AC Adapter
Physical
Environmental
Microprocessor
Microprocessor types Intel® Mobile Pentium® 4M or Intel
Celeron® processor
L1 cache 8 KB (internal)
L2 cache 512 KB (on die)
External bus frequency 400 MHz
System Information
System chip set Intel 845MP
Data bus width 64 bits
DRAM bus width 64 bits
Microprocessor address bus width 32 bits
PC Card
CardBus controller Texas Instruments PCI 1420
CardBus controller
PC Card connector two (supports two Type I or Type II
cards or one Type III card)
Cards supported 3.3 V and 5 V
PC Card connector size 68 pins
Data width (maximum) PCMCIA 16 bits
CardBus 32 bits