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StarTech USB 2.0 to Gigabit Ethernet NIC Network Adapter - Add Gigabit Ethernet to any USB 2.0 compatible PC or Laptop computer - USB to Gigabit Ethernet - USB 2.0 Gigabit Adapter - USB 2.0 Ethernet Adapter - USB Network Adapter

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  • Connect to a Gigabit network
  • Replace a failed network adapter
  • Gigabit networking over USB 2.0 with up to 480 Mbps of bandwidth
  • IEEE 802.3, 802.3u and 802.3ab compatible
  • Powered directly from USB

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


Learn more about the STARTECH USB21000S2

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details
  • Return Policies
    • Return for refund within: 45 days
    • Return for replacement within: 1 year
  • This item is covered by Newegg.com's 45/1 Return Policy.
Ownership: 1 week to 1 month
Verified Owner
5/ 5
no problems, good speed even with usb 2

Pros: No compatibility issues in Windows 10, just plug and play!
Faster network speed than other USB 2.0 adapters that are just fast ethernet, this one connects for gigabit speed, but you'll obviously not get gigabit speed with USB 2.0

Cons: none

Overall Review: bought this for use with my lenovo HDMI stick computer (Lenovo Ideacenter 300 stick). It has a USB 2.0 connection on it, so no sense buying a USB 3.0 adapter... The Lenovo's Wi-Fi anntenna is pretty weak, and I was not happy with it's network speed while it was set up behind my living room TV... so this was the perfect solution.

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Ownership: 1 day to 1 week
Verified Owner
2/ 5
Fast to send; slow to receive

Pros: Writes 1GB files at 42,465,017 Bytes/Sec

Cons: Reads same files at 26,786,274 Bytes/Sec

Overall Review: I tested the card on machines with SSDs that transferred these files over hardwired GB cards at about 98GB/sec. I attached the adapter to a USB card on one of the machines and got the results above. I used StarTech chat to see if this was what I should expect - whether read and write speeds should vary. Finally I asked:
"Ok. Just for the record, you're saying that as long I can can send and receive data, regardless of the speed, you'd say the device is working properly?" The tech replied "Yes."

2 out of 4 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works perfectly

Pros: works exactly as specified

Cons: none

0 out of 1 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
1/ 5
Useless for anything but Windows

Pros: Came quickly

Cons: As the other comment states, doesn't work with BSD, Linux, or Mac. Probably works with Windows 7, but I don't, so it doesn't matter. The old model was much better.

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Ownership: 1 day to 1 week
1/ 5
Not Surface RT compatible

Pros: For its intended purpose - none

Cons: No drivers for this adapter exist for the Surface RT or PRO. I called their support and was told the same thing. Whats a bit ironic is that within the same chipset, a higher numbered chipset actually has an RT driver so go figure.

Overall Review: Manufacturers need to include whether a device is RT/PRO compatible within their verbiage or documentation. Will be sending this thing back.

0 out of 1 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
4/ 5
Not too bad

Pros: Works well for a USB 2.0 ethernet adapter.

Cons: Not as fast as I was hoping it would be.

Overall Review: I own two of these. The first I bought ~1yr ago and is the older gen to this one (new purchase; just arrived today). The first I am using on a 10/100 network where I needed another NIC on a box with no more room. It has been very reliable with a lot of traffic on it. Concidering how much I have beat on it over the last year, I am giving it 4 stars.

I bought a second one because a build-in Gb network card kicked the bucket. Other then that the box is in fantastic shape, has no free slots in it, and I don't want to replace the MB but I need a network card. Since the USB 2.0 specs out at 480Mb/s [~= 60MB/s] I was really hoping to push around 50MB/s with this device. I took two identical systems and a crossover cable and ran iperf3 tests on Ubuntu Linux. 112MB/s on average is the baseline between the two real built-in Gb cards on those two boxes. I plugged this device in and reran the tests. There was zero fluctuation in all of the iperf3 tests: 35.1MB/s. Every time. No matter which system I plugged it into, or how I rigged the cabling (crossover/used a switch) it was 35.1MB/s.

Now 35.1MB/s isn't too terrible by any means, but I frequently push multi-GB files back and forth to the box this device will sit on and I know I can't expect the max 60MB/s out of it but I would have /really/ liked to have gotten at least mid 40's - upper 50's out of the device.

So it isn't as fast as I would like, but at least I know the first one has been quite reliable thus far. Hopefully this new one is equally reliable.

5 out of 5 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
I like it.

Pros: Works perfectly. I can connect it to a virtual machine.

Cons: None.

Overall Review: Since IT won't let me create my own subnets on their switches anymore, I use this for development in my office. I can connect to the IT network via the integrated NIC to maintain internet and network drive function, and I can connect to other hardware via a switch on my desk. I usually develop in VMs, and this works well for that.

2 out of 2 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
1/ 5
DOA?

Pros: Compact, USB, gigabit

Cons: Doesn't actually work

Overall Review: I have the (presumably older USB21000S1) version of this and it "just works" on Mac, PC, Linux, BSD etc. This one doesn't seem to work on any of those. I'm going to assume that it is DOA and try another one. Otherwise, I'll be searching for the older unit.

1 out of 3 people found this review helpful. Did you?
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