0400:c55d — Rigol Technologies DS5000USB Oscilloscope
National Semiconductor Corp.
- Vendor ID
- 0400
- Product ID
- c55d
- Combined
- 0400:c55d
- Decimal
- 1024:50525
What is this device?
This is the USB identifier for a Rigol Technologies DS5000USB Oscilloscope manufactured by National Semiconductor Corp.. The vendor ID 0400 is registered to National Semiconductor Corp. with the USB Implementers Forum, and c55d is the product ID that National Semiconductor Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 0400:c55d National Semiconductor Corp. Rigol Technologies DS5000USB Oscilloscope.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 0400:c55d National Semiconductor Corp. Rigol Technologies DS5000USB Oscilloscope
You can filter directly with lsusb -d 0400:c55d, or get the full descriptor dump with lsusb -v -d 0400:c55d. Kernel messages from dmesg show the same pair as idVendor=0400, idProduct=c55d.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_0400&PID_C55D USB\VID_0400&PID_C55D&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0400&PID_C55D"
macOS
$ system_profiler SPUSBDataType
Rigol Technologies DS5000USB Oscilloscope:
Product ID: 0xc55d
Vendor ID: 0x0400 (National 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.
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
0400 National Semiconductor Corp. c55d Rigol Technologies DS5000USB Oscilloscope