Some SD Cards Not Working Properly With 2021 14 and 16-Inch MacBook Pros

[jalessi]

I was having the issue with my 14" MBP. Sometimes a card had to be reinserted slowly to get it to mount, and with some cards the read speed was painfully slow. But both of these problems seem to have gone away recently. Read speeds are what I would expect and I can pretty much put the card in any way I choose and it mounts correctly.

Maybe 12.2 fixed it?

 

[jlc1978]

I was having the issue with my 14" MBP. Sometimes a card had to be reinserted slowly to get it to mount, and with some cards the read speed was painfully slow. But both of these problems seem to have gone away recently. Read speeds are what I would expect and I can pretty much put the card in any way I choose and it mounts correctly.

Maybe 12.2 fixed it?

I had ghat issue with a Sandisk card; swapped with a Samsung and have had no issues since. Seems to be card specific my case.

 

[paalb]

I was having the issue with my 14" MBP. Sometimes a card had to be reinserted slowly to get it to mount, and with some cards the read speed was painfully slow. But both of these problems seem to have gone away recently. Read speeds are what I would expect and I can pretty much put the card in any way I choose and it mounts correctly.

Maybe 12.2 fixed it?

There is several reports that 12.2 fixed it. Fixed it for me too. Look in this thread https://forums.macrumors.com/threads/14-and-16-m1-pro-sd-card-slot-problems.2320399/post-30807723 and look at the end of this: https://discussions.apple.com/thread/253328461?page=5

 

[mudflap]

I'm late here but I'm running 13.1 and I can't copy most files/folders to a 256 PNY card without the copy freezing, then I have to force quit and relaunch Finder. I managed to avoid SD cards for my entire life then bought one for my 14" M1 MBP and it still doesn't work. Great timing eh?

 

[name99]

I'm late here but I'm running 13.1 and I can't copy most files/folders to a 256 PNY card without the copy freezing, then I have to force quit and relaunch Finder. I managed to avoid SD cards for my entire life then bought one for my 14" M1 MBP and it still doesn't work. Great timing eh?

Do you know that the card is "good"; ie have you tested it in some other environment?

I run an iMac Pro with a 512G SD card in it all the time and, while I won't say that Apple is flawless (there was an update some months ago which gave trouble for about a week till a subsequent update came out) it's largely trouble-free.
BUT SD cards (and anything flash related, up to and including SSDs) are among the most common faked items on Amazon. The fakes use broken flash, or much less flash than claimed or suchlike; enough that the device appears to work briefly, after which the trouble starts. Here's one version of this, but there are so many! I've been burned by one SSD this way.

This fake 16TB external SSD is Amazon’s best selling new storage release - just don’t buy it

Scam control at Amazon? We’ve heard about it

www.techradar.com

Given what you say, my guess is the card is a fake and (if possible, within window) send it back to AMZ for a refund.

 

[compwiz1202]

I guess we're gonna need a list of "Macbook Approved" SD cards... kinda like that list of decent tested USB-C cables from that Google engineer.

LOL I just thought this before I read this. In like a week they will release guaranteed compatible ApSD cards starting at $200 for 32GB

 

[mudflap]

Do you know that the card is "good"; ie have you tested it in some other environment?

Given what you say, my guess is the card is a fake and (if possible, within window) send it back to AMZ for a refund.

Thanks for the reply. However I doubt this one is fak as it's from the official PNY store, in a perfect blister pack. I have a Mac mini but it's apart at the moment while I install another drive in it, so I couldn't test it on anything else. I only had one day left to return it so I just went ahead and returned it as defective. I'll have to do some research on brands that work well with the M1 models, I guess. Thanks again.

 

[hardwickj]

Still experiencing this issue in 2023. For all of my cards except my newest OWC Atlas Ultra, file transfers stutter severely using the integrated reader, and even eventually fail if enough data is transferred. Using an external reader does not fail/stutter and is also much faster.

While my OWC Atlas Ultra doesn't experience the stuttering/failing, it is still much slower than the advertised speed. Getting write speeds of ~45MB/s, while plenty of others online are posting write speeds of >200MB/s.

 

[SenorWhyMe]

This sounds about right for SD cards. They are slow and prone to fail.

you don’t know a bit of SD cards and it shows . let me guess all you buy is the cheap 64gb without reading the specs