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dmk1974

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Sep 16, 2008
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For my M2 Mac Mini (which only has 2 lousy USB-C ports on it), I'd like to get a USB-C adapter that minimally has 3-4 additional USB-C ports on it as well as a 2.5 gigabit ethernet port (since I have faster Xfinity X2 service now, might as well use it). Any recommendations? I saw a couple on Amazon that are not brands I've heard of.

This one would be great, but just gigabit ethernet (which is already part of the Mac Mini of course)


Thanks!
 
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For my M2 Mac Mini (which only has 2 lousy USB-C ports on it), I'd like to get a USB-C adapter that minimally has 3-4 additional USB-C ports on it as well as a 2.5 gigabit ethernet port (since I have faster Xfinity X2 service now, might as well use it). Any recommendations? I saw a couple on Amazon that are not brands I've heard of.

This one would be great, but just gigabit ethernet (which is already part of the Mac Mini of course)


Thanks!

The real fix is a Thunderbolt 4 Hub/Docking station. Save your pennies!

A Thunderbolt dock will give you lots of expansion and plenty of bandwidth for networking and all of the other things you're going to want to concurrently use with your 2.5gb network connection.

These little glorified USB hubs are nice to pack for travel, but this may be worth consideration: https://www.ebay.com/itm/355754480595

I know this isnt a 2.5gbe network adapter, but youre better off.
 
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This is what I use. my regular speed hits around 2+gb.

 
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I have this, although I have no 2.5 Gb equipment yet so I bought it for futureproofing. But it does work on my M1 MBA.

 
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Thanks. I actually also do have an adapter like you posted that is just USB-C to a 2.5 gig port, but am ideally looking for one that includes 3-4 female USB ports on it.

Minimally, a hybrid of something like these two would be great:


 
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MOKiN makes some decent stuff. I use a 10 port hub from them that has hdmi and vga because one of the lecture halls at work still uses vga projectors. I’ve had it for about 4 years or so and it works great with my MBP.

That said, the M-series chips are terrible for providing bus power, so unless you are just planning on plugging in a wired keyboard and occasional flash drive, I would recommend getting something with its own power source.

I use a thunderbolt dual DisplayPort from Monoprice with my mini. For the $80 I paid, I can’t complain, but I would look at other options if buying now.
 
I bought a UGREEN USB-C 2.5 GB Ethernet adapter to use with my MacBook Pro M1 max.

Since switching to MacOS Sequoia, I've noticed that the speed reached no longer exceeds 2 GB, whereas with MacOS Sonoma the speed reached 2.5 GB.

Is this a normal limitation of macOS 15.0?
Same situation with my iPhone 15 pro max. Same limitation at 2 GB.

Have you noticed this difference?
 
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I bought a UGREEN USB-C 2.5 GB Ethernet adapter to use with my MacBook Pro M1 max.

Since switching to MacOS Sequoia, I've noticed that the speed reached no longer exceeds 2 GB, whereas with MacOS Sonoma the speed reached 2.5 GB.

Is this a normal limitation of macOS 15.0?
Same situation with my iPhone 15 pro max. Same limitation at 2 GB.

Have you noticed this difference?
For mine with my Mac Mini, I have not noticed any difference. Though, based on my internet speed and going through MoCA, I get about 1850/320 on my speed tests.
 
I bought a UGREEN USB-C 2.5 GB Ethernet adapter to use with my MacBook Pro M1 max.

Since switching to MacOS Sequoia, I've noticed that the speed reached no longer exceeds 2 GB, whereas with MacOS Sonoma the speed reached 2.5 GB.

I found this thread because I have noticed the exact same thing, and originally assumed something was wrong with my ISP.
I have the very same adapter — after having returned an Anker one that was DOA — and it seems to cap out at around 2 Gbit/s, which is effectively around 1930 Mbit/s after taking care of the overhead. I tried it on both a M2 Pro Mac Mini and a M1 MacBook Air, and they act the same way.
On the other hand my NAS, a TerraMaster D4-423, gets the full ~2300 Mbit/s I used to get. I tried using speedtest-cli and a public iperf3 server, and the end result is the same: the Macs get ~1900, the NAS gets 2100-2300 (depending on the test).

That said... the weirdest thing is that I can fully saturate the 2.5 Gbit/s link when transferring data from the NAS, and I'm honestly not sure how that makes a difference. Running iperf3 between Mac and NAS consistently returns a solid 2.35 Gbit/s throughout the test, every single time. Do you have any other 2.5GbE devices on your network that you may test to see if you get the same result?

Unless Sequoia somehow filters WAN traffic more aggressively than it does LAN traffic, which may explain the relative slowdown, I'm really not sure what may be going on. I know that Realtek 8156 chipsets have had a long and painful history on macOS, but it seemed like all was good with Sonoma. Or, if anything, people either got consistently good speeds or consistently bad speeds, not... this oddity. :-D
 
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