04b4:00f3 — FX3 micro-controller (DFU mode)
Cypress Semiconductor Corp.
- Vendor ID
- 04b4
- Product ID
- 00f3
- Combined
- 04b4:00f3
- Decimal
- 1204:243
What is this device?
This is the USB identifier for a FX3 micro-controller (DFU mode) manufactured by Cypress Semiconductor Corp.. The vendor ID 04b4 is registered to Cypress Semiconductor Corp. with the USB Implementers Forum, and 00f3 is the product ID that Cypress Semiconductor Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 04b4:00f3 Cypress Semiconductor Corp. FX3 micro-controller (DFU mode).
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04b4:00f3 Cypress Semiconductor Corp. FX3 micro-controller (DFU mode)
You can filter directly with lsusb -d 04b4:00f3, or get the full descriptor dump with lsusb -v -d 04b4:00f3. Kernel messages from dmesg show the same pair as idVendor=04b4, idProduct=00f3.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04B4&PID_00F3 USB\VID_04B4&PID_00F3&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04B4&PID_00F3"
macOS
$ system_profiler SPUSBDataType
FX3 micro-controller (DFU mode):
Product ID: 0x00f3
Vendor ID: 0x04b4 (Cypress Semiconductor Corp.)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. Cypress Semiconductor Corp. official support →
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
04b4 Cypress Semiconductor Corp. 00f3 FX3 micro-controller (DFU mode)