Dell Latitude C640 - Manual (Page 118)

Memory
Memory module connector two user-accessible SODIMM
sockets
Memory module capacities 128, 256, and 512 MB
Memory type 266-MHz DDR SDRAM
Standard memory 128 MB
Maximum memory 1 GB
Ports and Connectors
Serial 9-pin connector; 16550C-
compatible,
16-byte buffer connector
Parallel 25-hole connector; unidirectional,
bidirectional, or ECP
Video 15-hole connector
Audio microphone connector, stereo
headphone/speakers connector
PS/2 keyboard/mouse 6-pin mini-DIN connector
USB 4-pin USB 1.1-compliant connector
Infrared sensor compatible with IrDA
Standard 1.1 (Fast IR) and IrDA
Standard 1.0 (Slow IR)
Docking 200-pin connector for a Dell™
docking device
S-video TV-out 7-pin mini-DIN connector (optional
S-video to composite video adapter
cable)
Mini PCI Type IIIA Mini PCI card slot with Wi-
Fi (802.11b) wireless support
Modem RJ-11 port
Network adapter RJ-45 port
Communications
Modem:
Type v.92 56K MDC
Controller softmodem
Interface internal AC 97 bus
Network adapter 10/100 Ethernet LOM