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Looking for USB-C Gigabit Adapter for late new late 2016 MBP with good speed

Apple_Robert

Apple_Robert

Contributor
Original poster
Sep 21, 2012
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In a van down by the river
I just got AT&T Fiber internet and my connection on the 2011 MBP via ethernet is about a 980mbps. Using the Belkin USB-C Gigabit ethernet adapter from the Apple Store, I am doing well to get 500 mbps on the download, on my new late 2016 tbMBP. Is anyone else having trouble seeing good speeds with an ethernet adapter? Are there any other adapters where I would do better?
 
BeatCrazy said:
I think your only other option is from StarTech.
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Not familiar with them. Are you talking about an adapter or a powered dock?
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wlossw said:
it's also possible your router can't handle that kind of speed.
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The router can handle the speed. Other windows users in the house are also getting 980 on the download.
 
Strange, I've tested mine using iperf to a local server on our gigabit office network and I'm getting ~920. You don't have it plugged into the back of the LG 5k screen by any chance?
 
pshifrin said:
Strange, I've tested mine using iperf to a local server on our gigabit office network and I'm getting ~920. You don't have it plugged into the back of the LG 5k screen by any chance?
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No external monitor.

It is strange indeed. I have been seeing 475 - 675 on the usual speed sites. The ATT speed site is the only one that shows me about 835 - 850 on the up / down.

I have also the Safari shows lower numbers than Chrome.

I wonder if the Belkin USB-C to Ethernet adapter is the culprit.
 
What about copying files over LAN? I do not have the Belkin adapter but one from Aukey I think. Nevertheless both adapter have the same Realtek chip in it and my Aukey adapter gives me nearly 1 GBit/s over LAN.
 
Creep89 said:
What about copying files over LAN? I do not have the Belkin adapter but one from Aukey I think. Nevertheless both adapter have the same Realtek chip in it and my Aukey adapter gives me nearly 1 GBit/s over LAN.
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I have copied over LAN, but didn't think to check the speed. Thanks for asking. I will check it when I get home.
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SarcasticJoe said:
Well it doesn't sound too far fetched that Belkin may have gone a bit cheap thinking they're going to be able to get away with it as most users don't even get close to those kinds of speeds.
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I have the "Plugable" brand coming from Amazon today. Will be interesting to see if speeds are any better.

Forgot to mention earlier, I plugged my new Mac directly into the UVerse gateway yesterday, and speeds showed about the same. That is what made me start thinking it could be the adapter.
 
Try using iperf to check between your notebook and another machine on the network (it is a well known and very good tool for network performance testing). Don't rely on speedtests on the internet because you add more parameters (iow you make it more difficult because there are more things at play). It isn't uncommon that speedtests on the internet can't reach 1Gbit/s.

As for my own Belkin USB-C ethernet adapter...I did a quick test with iperf to check and it reaches 1Gbit/s without problems.
 
BasicGreatGuy said:
I just got AT&T Fiber internet and my connection on the 2011 MBP via ethernet is about a 980mbps. Using the Belkin USB-C Gigabit ethernet adapter from the Apple Store, I am doing well to get 500 mbps on the download, on my new late 2016 tbMBP. Is anyone else having trouble seeing good speeds with an ethernet adapter? Are there any other adapters where I would do better?
Click to expand...
It is strange, I am using belkin and transfers from/to my NAS are about 100-120MB/s which is almost 1gbit...
 
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