IBM ThinkPad 310ED - Keyboard; Audio; External interface

Features and Specifications
D-2 IBM ThinkPad 310E/310ED: User’s Guide
Keyboard
• 85-key, 86-key, or 89-key
• TrackPoint III
• Fn key functions
• Embedded numeric keypad
Audio
• Compatible with Sound Blaster Pro
External interface
• DC-in jack for AC Adapter
• Serial connector (EIA-RS232D)
• Parallel connector (Centronics)
• External input-device connector
• External monitor connector
• External diskette drive connector
• Audio line-in jack
• Audio line-out/headphone jack
• Microphone jack
• Two PCMCIA slots (accept two Type I or Type II PC Cards, or
one Type III PC Card)