04d8:f91c — SPROG IIv3

Microchip Technology, Inc.

Vendor ID: 04d8
Product ID: f91c
Combined: 04d8:f91c
Decimal: 1240:63772

What is this device?

This is the USB identifier for a SPROG IIv3 manufactured by Microchip Technology, Inc.. The vendor ID 04d8 is registered to Microchip Technology, Inc. with the USB Implementers Forum, and f91c is the product ID that Microchip Technology, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 04d8:f91c Microchip Technology, Inc. SPROG IIv3.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 04d8:f91c Microchip Technology, Inc. SPROG IIv3

You can filter directly with lsusb -d 04d8:f91c, or get the full descriptor dump with lsusb -v -d 04d8:f91c. Kernel messages from dmesg show the same pair as idVendor=04d8, idProduct=f91c.

Windows

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

USB\VID_04D8&PID_F91C
USB\VID_04D8&PID_F91C&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04D8&PID_F91C"

macOS

$ system_profiler SPUSBDataType
    SPROG IIv3:
      Product ID: 0xf91c
      Vendor ID: 0x04d8  (Microchip Technology, 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:

04d8  Microchip Technology, Inc.
	f91c  SPROG IIv3

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