You can find information about the various connectors and slots found in ThinkPads here.

Ports & Connectors

• Audio Jacks (Miniature jack plug)
• Docking Port
• DVI Port
• Ethernet Port (RJ-45)
• Floppy Connector
• Firewire Port (IEEE 1394)
• MIDI/Game Port
• Modem Port (RJ-11)
• Parallel Port (DB-25)
• PS/2 Port (PS/2 Keyboard and Mouse)
• Power Connector
• SCSI Port
• Serial Port (DB-9, RS-232)
• TV-Out Port (mini-DIN)
• UltraPort
• USB Port (Type A)
• VGA Port (Mini Sub D15)

Slots

• CDC slot(Communications Daughter Card)
• MiniPCI slot
• MiniPCI Express slot
• PCMCIA slot (PC Card slot)
• CardBus slot (PC Card slot)
• ExpressCard slot (PC Card slot)
• CF Card slot (Compact Flash)
• SD Card slot (Secure Digital)
• MS Card slot (Sony Memory Stick)
• SmartMedia Card slot
• xD Card slot (xD-Picure card)
• UltraBay