8564:4000 — microSD/SD/CF UHS-II Card Reader [RDF8, RDF9]
Transcend Information, Inc.
- Vendor ID
- 8564
- Product ID
- 4000
- Combined
- 8564:4000
- Decimal
- 34148:16384
What is this device?
This is the USB identifier for a microSD/SD/CF UHS-II Card Reader [RDF8, RDF9] manufactured by Transcend Information, Inc.. The vendor ID 8564 is registered to Transcend Information, Inc. with the USB Implementers Forum, and 4000 is the product ID that Transcend Information, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 8564:4000 Transcend Information, Inc. microSD/SD/CF UHS-II Card Reader [RDF8, RDF9].
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 8564:4000 Transcend Information, Inc. microSD/SD/CF UHS-II Card Reader [RDF8, RDF9]
You can filter directly with lsusb -d 8564:4000, or get the full descriptor dump with lsusb -v -d 8564:4000. Kernel messages from dmesg show the same pair as idVendor=8564, idProduct=4000.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_8564&PID_4000 USB\VID_8564&PID_4000&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_8564&PID_4000"
macOS
$ system_profiler SPUSBDataType
microSD/SD/CF UHS-II Card Reader [RDF8, RDF9]:
Product ID: 0x4000
Vendor ID: 0x8564 (Transcend Information, 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:
8564 Transcend Information, Inc. 4000 microSD/SD/CF UHS-II Card Reader [RDF8, RDF9]