CompactFlash & Microdrive Reader

USB ID 07c4:a400 · Datafab Systems, Inc.

VendorDatafab Systems, Inc.
Vendor ID07c4
Device IDa400
Windows hardware IDUSB\VID_07C4&PID_A400
Linux modaliasusb:v07C4pA400
Linux driverusb_storage

Frequently asked questions

Which device has USB ID 07c4:a400?

USB ID 07c4:a400 is “CompactFlash & Microdrive Reader” made by Datafab Systems, Inc. (vendor ID 07c4, device ID a400).

Which Linux driver supports CompactFlash & Microdrive Reader?

In Linux kernel 6.12 the device is bound to the driver usb_storage (source under drivers/usb/storage). The driver is normally loaded automatically when the device is detected.

How do I check whether CompactFlash & Microdrive Reader is in my computer?

On Linux, lsusb -d 07c4:a400 shows the device if it is present. On Windows, open Device Manager, then Properties → Details → Hardware Ids; it appears as USB\VID_07C4&PID_A400.

How do I see which driver is currently in use?

lsusb -t prints the device tree with the bound driver (Driver=…) for each interface.

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