07c4:a400 — CompactFlash & Microdrive Reader
Datafab Systems, Inc.
- Vendor ID
- 07c4
- Product ID
- a400
- Combined
- 07c4:a400
- Decimal
- 1988:41984
What is this device?
This is the USB identifier for a CompactFlash & Microdrive Reader manufactured by Datafab Systems, Inc.. The vendor ID 07c4 is registered to Datafab Systems, Inc. with the USB Implementers Forum, and a400 is the product ID that Datafab Systems, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 07c4:a400 Datafab Systems, Inc. CompactFlash & Microdrive Reader.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 07c4:a400 Datafab Systems, Inc. CompactFlash & Microdrive Reader
You can filter directly with lsusb -d 07c4:a400, or get the full descriptor dump with lsusb -v -d 07c4:a400. Kernel messages from dmesg show the same pair as idVendor=07c4, idProduct=a400.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_07C4&PID_A400 USB\VID_07C4&PID_A400&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_07C4&PID_A400"
macOS
$ system_profiler SPUSBDataType
CompactFlash & Microdrive Reader:
Product ID: 0xa400
Vendor ID: 0x07c4 (Datafab Systems, Inc.)Driver help
Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
07c4 Datafab Systems, Inc. a400 CompactFlash & Microdrive Reader