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It's not for Thunderbolt 3 Macs. Even though I searched for Thunderbolt 3 to Ethernet adapter it appears in the list. That's outrageous. If you want to use it for a Mac that has Thunderbolt 3 ports you need another adapter to make it work. If you bought it by mistake, (Amazon's mistake very possibly), return it if it's still in the 30 day return period. Get the proper adapter. I agree with someone else who posted that it's unclear what this adapter is for. A photo of the small end, looking down into the plug, would help people to avoid buying this when they don't need it. And the title and description needs to say that's it's for Thunderbolt 2, and not just "Apple Thunderbolt to Gigabit Ethernet Adapter", which is reprehensible. When I bought my MacBook Pro from Apple in 2017 and asked for an Ethernet adapter to be included in the order, even the sales person sent me the wrong adapter. Apple was nice to send me for free a second adapter to make the connection go to my Mac to correct their mistake. I think it was a Thunderbolt 2 to Thunderbolt 3 adapter. My Internet connection to my Mac occasionally stops working, and I think it might be due to this adapter. The connection stopped working tonight, so I got out the new adapter. I plugged it in, and Internet was still out. I plugged in the old one and Internet was back. The process of plugging in and out might have made for a better metal to metal connection.
I got burned just like a number of other reviewers. The listing photo makes this look like it’s a USBC/Thunderbolt 3 connector, but it is not. It is the older Thunderbolt 2. You’d need another $50 adapter to go from TB3 to TB2 to use this on any recent Mac. Returned.
The add doesn't say it is Thunderbolt 3, but it also doesn't say what version it is. I'm not sure, but I am guessing this must be an old Thunderbolt 1 (since it doesn't say). I wasn't aware of this but Thunderbolt 3 is physically a different size then earlier Thunderbolt plugs. The box that includes the product has pictures so you can tell, but the listing here does not....can't tell from the pictures.
The product is probably fine. But the listing is not very good...or at least needs to be updated.
I have just started a return/replace with Amazon. So, two things I found running this on a brand new Macbook Air. 1. This dongle (what a funny word) gets very warm to the touch about 10 minutes after running it. Now, I'm no computer technology periphr....you know designer or engineer but I do know heat-bad for electronics. So, I hope I only got a bad one because if the replacement does the same thing, well, then its a design flaw. 2. The one I just returned would drop its signal from the internet about every 5 minutes. I am using a brand spanking new 15 Ethernet cable from Amazon (same order as this dongle - ha) and a fairly new TP-Link router. Yes I have tried other ports on the router - same problem. And yes I tried other ethernet connections in this particular router port - works fine. SO, must be the dongle.
So, I really wanted this thing to work but in the end, strike 1.
this is evidently a "lightening 2" adapter, which won't fit in the MacBook Air 2018 computer. You have to buy an adapter. There doesn't seem to be a way to directly hook up an Ethernet cable to the MacBook. Apple needs to get on the ball.
It does what it's supposed to once it's connected. Except that I have to restart my MacBook pro in order to establish an internet connection when I plug it in. It won't read the dongle or anything flowing through without the restart.