A legitimate device should never have VID FFFF . Therefore, encountering this ID in a production environment raises a red flag.

Look for entries showing idVendor=ffff idProduct=1201 or similar.

While VID_FFFF is generic, PID_1201 helps narrow down the hardware. In the context of "patched" devices, this ID is strongly associated with or USB-to-Serial/Debug adapters .

1201 is standard for these mass storage devices.

Many "patched" drives report 512GB or more but actually contain only 1GB to 14GB of real storage. Recommendation FirstChip FC1178/FC1179 MpTools V1.0.5.2 (2022-06-01)

The device defines its class at the interface level. Further inspection revealed a single interface with three endpoints:

USB Ports Not Working on Windows: Solve Common USB Issues | Dell US

These drives are typically standard USB 2.0 High Speed devices. Users often report slow sequential read/write speeds, which can drop significantly when handling many small files.