IBM ThinkPad i Series 1800 Troubleshooting Manual page 12

Features
External interface
v Serial connector (EIA-RS232D)
v Parallel connector (IEEE 1284A)
v External-monitor connector
v PC Card slot ( Type I, Type II, or Type III PC Card)
v Headphone jack
v Line-in jack
v Microphone jack
v Universal Serial Bus (USB) connector
v RJ11 telephone connector (available if the modem Mini-PCI Card or the
Combo Mini-PCI Card is installed)
v RJ45 Ethernet connector (available if the Ethernet Mini-PCI Card or the
Combo Mini-PCI Card is installed)
v Ultrabay
v Expansion connector
4
®
ThinkPad A21e Service and Troubleshooting Guide
™
2000