067c:e540 — Speedstream Ethernet Adapter E240
Efficient Networks, Inc.
- Vendor ID
- 067c
- Product ID
- e540
- Combined
- 067c:e540
- Decimal
- 1660:58688
What is this device?
This is the USB identifier for a Speedstream Ethernet Adapter E240 manufactured by Efficient Networks, Inc.. The vendor ID 067c is registered to Efficient Networks, Inc. with the USB Implementers Forum, and e540 is the product ID that Efficient Networks, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 067c:e540 Efficient Networks, Inc. Speedstream Ethernet Adapter E240.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 067c:e540 Efficient Networks, Inc. Speedstream Ethernet Adapter E240
You can filter directly with lsusb -d 067c:e540, or get the full descriptor dump with lsusb -v -d 067c:e540. Kernel messages from dmesg show the same pair as idVendor=067c, idProduct=e540.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_067C&PID_E540 USB\VID_067C&PID_E540&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_067C&PID_E540"
macOS
$ system_profiler SPUSBDataType
Speedstream Ethernet Adapter E240:
Product ID: 0xe540
Vendor ID: 0x067c (Efficient Networks, 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:
067c Efficient Networks, Inc. e540 Speedstream Ethernet Adapter E240