04cf:8819 — USB 2.0 SD/MMC Reader
Myson Century, Inc.
- Vendor ID
- 04cf
- Product ID
- 8819
- Combined
- 04cf:8819
- Decimal
- 1231:34841
What is this device?
This is the USB identifier for a USB 2.0 SD/MMC Reader manufactured by Myson Century, Inc.. The vendor ID 04cf is registered to Myson Century, Inc. with the USB Implementers Forum, and 8819 is the product ID that Myson Century, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 04cf:8819 Myson Century, Inc. USB 2.0 SD/MMC Reader.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04cf:8819 Myson Century, Inc. USB 2.0 SD/MMC Reader
You can filter directly with lsusb -d 04cf:8819, or get the full descriptor dump with lsusb -v -d 04cf:8819. Kernel messages from dmesg show the same pair as idVendor=04cf, idProduct=8819.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04CF&PID_8819 USB\VID_04CF&PID_8819&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04CF&PID_8819"
macOS
$ system_profiler SPUSBDataType
USB 2.0 SD/MMC Reader:
Product ID: 0x8819
Vendor ID: 0x04cf (Myson Century, 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:
04cf Myson Century, Inc. 8819 USB 2.0 SD/MMC Reader