SanDisk Ultra memory card, adapter and reader

Unboxing SanDisk Ultra microSDXC UHS-I Card

  • Adam Douglas

I’ve been struggling lately trying to figure out what to buy to read my memory cards for my various devices. I tried to go with an Anker USB 3.0 Card Reader (model: AR200) unfortunately that didn’t work out. I’ll explain that in more detail in another post. So I was still left with using 10+ year old card readers and well lets just say they work but it takes forever to get anything done. I was at Costco not long ago and spotted a sale on a SanDisk microSDXC UHS-I 128GB card with adapter and USB 3.0 reader for only $21.99 CAD. This seemed like a good deal and would deal with my issue for the time being in regards to handling microSD card reader for the computer. I realize that SanDisk Extreme and UHS-II/UHS-III would be more ideal but for the price point I feel this is fair and will work. I need to be able to transfer my photos and videos to the computer quickly and easily and have the ability to delete what I wish to via the computer because doing this on the camera is very time consuming and just not efficient. Enough of this, let’s get to my initial thoughts on the product itself.

The packing is pretty minimal which I am thankful just wish they could work out a way to not use the plastic within the card board holding the product. As for opening the package, this is where I am just stumped with a “why”? Why is it that this one and so many product packaging now has a nice cut line but if you cut exactly on the line like you are suppose to do it doesn’t open the package. I had to cut beyond the line in order to get the package open. The whole point of the cut line is to avoid cutting into the product and creating potential damage.

The microSDXC card looks like all typical cards like this and not really special now a days. I would say though that I love having raised lip on the card to help holding, inserting and removing the card. The microSD/SDHC/SDXC to SD card adapter again is pretty much standard now, I only wish I knew the specifications of the adapter more so in regards to transfer speeds. As for the card reader it appears to be a SanDisk MobileMate USB 3.0 supporting micro SD/SDHC/SDXC to USB-A. However my packing doesn’t state this at all. The card reader works well however I do have a one complaint with it. There is a rounded lip just below where you insert and remove the micro SD/SDHC/SDXC card. This makes it quite difficult to remove the card. If they just simply put a nice indent or just removed the lip all together this would make taking the micro SD/SDHC/SDXC card out so much easier. I believe with this current design it would get even worse for those with bigger fingers. May work well with those that have nails. Otherwise it works well and I do appreciated the nice molded lip on the top for your thumb to allow for better control inserting and removing the device from the USB-A port. The storage case I do really appreciate having since it is very easy to loose your microSD/SDHC/SDXC card. Would be nice to have the case a little larger so it could also hold the card reader.


The following specifications are what I was able to gather on my own since the packaging does not state specifics for each item included in the packaging. It appears to only tell you about the microSDXC memory card.


Product devices are marked with the year 2020.

Package contents

  • USB 3.0 Reader
  • Micro SD/SDHC/SDXC card adapter
  • MicroSDXC 128GB card
  • Storage case


Storage case holds the microSDXC card and micro SD/SDHC/SDXC card adapter.

SanDisk microSDXC

Capacity 128GB
Dimensions (L x W x H) 0.04” x 0.59” x 0.43”
Sequential Read Performance Up to 120MB/s
Product Number SDSQUA4-128GB-CCCMB
Warranty 10 year limited

SanDisk MobileMate USB 3.0 Reader

Model SDDR-B531
Interface USB 3.0
Connector USB-A
Compatibility USB 3.0 and backwards compatible with USB 2.0
Transfer Speed Up to 170MB/s
Dimensions (L x W x H) 1.2” x 0.81” x 0.34”
Warranty 2 year limited


Up to 170MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds.

SanDisk Adapter

Interface microSD/SDHC/SDXC
Connector SD
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