MMC/ SD Reader
USB ID 55aa:b204 · OnSpec Electronic, Inc.
| Vendor | OnSpec Electronic, Inc. |
|---|---|
| Vendor ID | 55aa |
| Device ID | b204 |
| Windows hardware ID | USB\VID_55AA&PID_B204 |
| Linux modalias | usb:v55AApB204 |
| Linux driver | no driver with exact ID |
Frequently asked questions
Which device has USB ID 55aa:b204?
USB ID 55aa:b204 is “MMC/ SD Reader” made by OnSpec Electronic, Inc. (vendor ID 55aa, device ID b204).
Which Linux driver supports MMC/ SD Reader?
Linux kernel 6.12 lists no driver for this exact ID. Most USB devices (keyboards, mice, storage, webcams, audio) still work through generic class drivers such as usbhid, usb-storage, uvcvideo or snd-usb-audio. Overview of device classes and their drivers
How do I check whether MMC/ SD Reader is in my computer?
On Linux, lsusb -d 55aa:b204 shows the device if it is present. On Windows, open Device Manager, then Properties → Details → Hardware Ids; it appears as USB\VID_55AA&PID_B204.
How do I see which driver is currently in use?
lsusb -t prints the device tree with the bound driver (Driver=…) for each interface.