Plugable USB3-E1000 Adapter dropping connection

I just received this adapter from Amazon yesterday (10/8/15) as I was having severe internet connection issues with my built in Broadcom Ethernet drivers on Windows 10 Pro x64.

I plugged in Plugable and noticed (using speedtest) my connection was fluctuating everywhere from 2Mbs to 40 Mbs (download time) and also completely dropping my network connection.

I have disabled my Broadcom driver, used 2 different Cat5 cables to rule that out, and I’m plugging it directly from the cable modem to the USB 3 port on my PC (completely bypassing the router).

My PC is a custom built desktop and my motherboard is an AsRock Z77 OC Formula with all the current BIOS updates.

I didn’t see any compatibility issues (other than Lenovo) prior to my purchase and expected to have an excellent connection. I’d appreciate any help you can provide to sort this out as it’s frustrating to keep unplugging/reinstalling to get the internet working and for only about 20 minutes at a time (if that).

Thanks in advance,

Hi Mesh,

I’ve also sent this in response to the direct email you sent to our support address.

Thank you for contacting us about your USB3-E1000 adapter. I’m the product manager for that device, and Bernie asked me to help you with it.

We often see situations where a computer has issues with the built-in driver, and then with the USB Ethernet adapter as well. This can happen if there are more fundamental problems with computer or the network.

Intermittent issues, by their very nature can be very frustrating to resolve, but I can try to help with this. If it turns out that our adapter is having problems, we will get a replacement out to you right away.

We have a troubleshooting tool that can help find out what is going on in situations like this. With the adapter plugged into your computer and the network, please go to this page, and follow the instructions there:

Please send the resulting flie directly to our support email at


Plugable Support

Thanks David for the quick reply.

I’ll definitely test out that tool as soon as I get home and send the file to your support email.

Thanks again and have a great weekend!!

The solution to my issue was within Win10 and nothing else.

The fix was:

Go to Network Connections in your computer, then right-click your Ethernet adapter and click “Properties”. Then under “Networking”, click the “Configure” button. Go to “Power Management” and uncheck the box that reads “Allow the computer to turn off this device to save power”.

My connection speeds are now peaking regularly at 40Mbs download/2Mbs upload!!!

Although this wasn’t a Plugable issue, I truly appreciate all the helpful suggestions David for your excellent support/diligence in keeping on top of this.


Thanks! I’m glad it’s working now. That solution may be useful for others as well.