CF Card slot

The CF Card slot (CompactFlash) is found on select ThinkPads.

This is a CF+ Type II slot.

• Wikipedia article on CF Cards

PCMCIA based CompactFlash

This is implemented as a PCMCIA device, that can support both CF memory cards, and CF IO cards (e.g. Bluetooth or WiFi).

Linux support

This is handled by the Linux PCMCIA subsystem.

Models featuring this Technology

• PC110
• S30, S31
• X20, X21, X22, X23, X24
• X30, X31, X32
• TransNote

USB based CompactFlash

This is implemented as a USB device, and can only support CF memory cards.

Linux support

This is handled by the Linux USB Storage subsystem (usb-storage).

Models featuring this Technology

• UltraPort Compact Flash Adapter
• ThinkPad Advanced Dock