04b4:5500 — HID->COM RS232 Adapter
Cypress Semiconductor Corp.
- Vendor ID
- 04b4
- Product ID
- 5500
- Combined
- 04b4:5500
- Decimal
- 1204:21760
What is this device?
This is the USB identifier for a HID->COM RS232 Adapter manufactured by Cypress Semiconductor Corp.. The vendor ID 04b4 is registered to Cypress Semiconductor Corp. with the USB Implementers Forum, and 5500 is the product ID that Cypress Semiconductor Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 04b4:5500 Cypress Semiconductor Corp. HID->COM RS232 Adapter.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04b4:5500 Cypress Semiconductor Corp. HID->COM RS232 Adapter
You can filter directly with lsusb -d 04b4:5500, or get the full descriptor dump with lsusb -v -d 04b4:5500. Kernel messages from dmesg show the same pair as idVendor=04b4, idProduct=5500.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04B4&PID_5500 USB\VID_04B4&PID_5500&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04B4&PID_5500"
macOS
$ system_profiler SPUSBDataType
HID->COM RS232 Adapter:
Product ID: 0x5500
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. 5500 HID->COM RS232 Adapter