1781:1ef0 — E1701 Modular Controller Card
Multiple Vendors
- Vendor ID
- 1781
- Product ID
- 1ef0
- Combined
- 1781:1ef0
- Decimal
- 6017:7920
What is this device?
This is the USB identifier for a E1701 Modular Controller Card manufactured by Multiple Vendors. The vendor ID 1781 is registered to Multiple Vendors with the USB Implementers Forum, and 1ef0 is the product ID that Multiple Vendors assigned to this particular model. When you run lsusb on Linux, this device appears as 1781:1ef0 Multiple Vendors E1701 Modular Controller Card.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 1781:1ef0 Multiple Vendors E1701 Modular Controller Card
You can filter directly with lsusb -d 1781:1ef0, or get the full descriptor dump with lsusb -v -d 1781:1ef0. Kernel messages from dmesg show the same pair as idVendor=1781, idProduct=1ef0.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_1781&PID_1EF0 USB\VID_1781&PID_1EF0&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_1781&PID_1EF0"
macOS
$ system_profiler SPUSBDataType
E1701 Modular Controller Card:
Product ID: 0x1ef0
Vendor ID: 0x1781 (Multiple Vendors)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:
1781 Multiple Vendors 1ef0 E1701 Modular Controller Card