1bcf:0c31 — SPIF30x Serial-ATA bridge

This is the USB identifier for a SPIF30x Serial-ATA bridge manufactured by Sunplus Innovation Technology Inc.. The vendor ID 1bcf is registered to Sunplus Innovation Technology Inc. with the USB Implementers Forum, and 0c31 is the product ID that Sunplus Innovation Technology Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 1bcf:0c31 Sunplus Innovation Technology Inc. SPIF30x Serial-ATA bridge.

Linux

$ lsusb
Bus 001 Device 004: ID 1bcf:0c31 Sunplus Innovation Technology Inc. SPIF30x Serial-ATA bridge

You can filter directly with lsusb -d 1bcf:0c31, or get the full descriptor dump with lsusb -v -d 1bcf:0c31. Kernel messages from dmesg show the same pair as idVendor=1bcf, idProduct=0c31.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_1BCF&PID_0C31
USB\VID_1BCF&PID_0C31&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_1BCF&PID_0C31"

macOS

$ system_profiler SPUSBDataType
    SPIF30x Serial-ATA bridge:
      Product ID: 0x0c31
      Vendor ID: 0x1bcf  (Sunplus Innovation Technology Inc.)

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.

The exact lines this page is generated from, in the upstream source file:

1bcf  Sunplus Innovation Technology Inc.
	0c31  SPIF30x Serial-ATA bridge

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