CF Card slot

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

This is a CF+ Type II slot.

ISA based CompactFlash

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

This is handled by the Linux PCMCIA subsystem.

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

This is handled by the Linux PCMCIA subsystem.

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

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