Transcend 256GB JetDrive Lite 350 Storage Expansion Card for 15-Inch MacBook Pro with Retina Display (TS256GJDL350)

I had the smaller version of this before (with no problems over the 2-3 years I'd been using it) , and as it was almost full I decided to upgrade to the larger one. And the price had come down since I last looked. These cards are very easy to use, and once plugged in I tend to forget that it's there. Obviously data access isn't as quick as the built in drive, but something like this is (IMO) really for storing less frequently used files. The card is fairly easy to remove when you want to change cards or use the port for something else, but I don't think that is something one would do very often. An excellent product.

I have used the 128Gb versions for a coupe of years with good results.The 256Gb version is not the same experience. First one failed after a few uses. Becomes unreadable and unwritable.A replacement was sent to me very efficiently, but this one failed within a day. It is not my misuse, all my other SDXC cards work fine in my MacBook. It must be a faulty batch I guess.I've not sent this one back as I do not want to waste another day getting a replacement up and running and worrying it will fail at any moment.I've purchased an alternative. Fingers crossed.

I had my laptop stolen the day after I installed this, so didn't get to spend a lot of time with it.It fit nearly 100% flush (albeit a tiny extrusion which is necessary). It looked the part, by not being visible.It's more expensive than it needs to be because it's the only one on the market.Performance was great - 90mbps as stated.It does just pop up as an SD card on your desktop - this is fine, but doesn't boot up instantly with the laptop - so essentially, using it as a HDD extension could prove problematic if you intend on using it as a place for your Dropbox files (via Boxifier) etc.Hope this helps.

This Transend card fits almost flush with a MacBook Pro 15” laptop, it’s fast at data transfer and plays movies flawlessly that I’ve copied onto it. Highly recommend to someone running low on storage, I’ve gone from 500gb to 756gb storage.

Does the job as described. I've had no problems pulling it out when intended too, and neither have I nor anyone else knocked it out accidentally. The end plate covers the SD card whole completely preventing dust getting in.Would be perfect if it was pre-formatted as a mac drive rather than a FAT drive, as ultimately that's the whole point of this device compared to a regular SD card. It comes across as laziness from Transcend and prevents me giving 5 stars.