Integral Micro SD & SD UHS-ii, UHS-11, UHS-2 USB3.0 Dual Slot Memory Card Reader Adapter - SuperSpeed transfer, Windows & Mac compatible and Supports UHS-II formats: SDHC, SDXC, microSDHC & microSDXC

Nicely made and arrived promptly. Works well with my Intregal UHS-II Memory Card and is backwardly compatible with UHS-I. Also works using USB 3 with Windows, and with "On The Go" using the usual USB C adapter with my Android phone and tablet. But i've not had the full transfer speed they suggest (the max i've got with it is 100MB/s for just a short while with my Intregal 64 GB UHS-II SD card), but it's still better than UHS-I and worth it. Also works when I plug it into the my TV or Blu-Ray player which is handy if you want to watch a High Def movie on your UHS-II SD Card and it playback very smoothly. Many Thanks.

The card works as it should, fast and stable.

This is a very good card reader, it is good value for money, compact and looks good. There is a removable protector for the USB port and there are two SD slots, one for full sized SD cards, another for Micro-SD cards. The slots are on either side of the reader. When choosing a new reader, I obviously looked at price and this reader gave the best balance between price and reviews that I could find. Having used the reader for a few months, it is time to submit my review. I noticed that the card reader was speedy at reading and writing files in comparison to my previous reader and the onboard reader from my 2018 laptop. I do not have a UHS-II card, so I have not seen this reader at its full potential. The cards I have are UHS-I Class 10 by SanDisk. I used CrystalDiskMark to test the speed of this reader compared to the 2018 onboard reader in my laptop and with the older cards, there is a marginal gain in performance - I expect this difference to be dramatic with UHS-II cards, a the onboard reader does not support those speeds.The only issue I have found with this reader is that when it comes to removing a Micro-SD card, I struggle if I have recently cut my finger nails, so I tend to use a card adapter in the full sized card reader slot when my nails are growing. Apart from that, this is good reader and is great value for money.

Is no faster than my previous reader which was UHS 1, I'm using with V60 & V90 cards.It works with my phone and some don't and it was quite cheap.

Card reader is great quality, nice metal construction and has unbelievable read speeds. I had to cope with 80MB/s with my old reader now getting about 250MB/s which is significantly faster when copying large 4K files

Works great in the Canon R5, 7237 shots on a single card, very quick writes (the 256GB is a bit quicker) but if you need a large card a good price for a good card, I have used with an Integral CF card reader and it download at 300mb/s.

I have thes H2 type SD cards in my A7R4 and as both SD slots are the same for this price fast enough for my needs. But thes two are now in my A7.3 and 128gb to replace the H1 cards but 64gb yes I have doubled my shooting availability but as one card slot is a slower one I'm limited to its speed. I can if I want shoot only on the fast card slot first and use the secondy card slot as a backup as there is so much memory on the one 128gb card.For my safety I choose to shoot simultaneously to both cards so I am only hoping I get a little better buffer time. With the H1 64gb cards it was acceptable but took a little to much time wrighting the buffers images to the cards and my burst rate was slowing down in seconds. I was ok with one motorcycle or a couple but could miss the shot of say the fourth do to the camera refusing to take anymore exposures till the buffer cleared . Yes I would love the fastest wrighting speed cards but the cost and limitations on the secondy slot on the A7.3 would be a waist of money. For thes cards and quality the price is very good. We will see soon enough five more seconds would help it's that close.I once had a bride coming into church from behind a door I was then useing the RX10mk4 I at 21shots a second filled my single cards buffer the camera was DEAD.Only seconds but seemed like forever the buffer line returned and in they come Bride four Brides maids and a page boy. Some of the best I ever took at a wedding but it could of been lost if them doors open a little early .

Integral UHS-II card reader.Simple, sleek design. Performs well with V90 SDXC UHS-II cards and has a decent transfer rate. Compatible with Apple silicone machines and older Intel-based Macs. (using a MacBook Air M1 running BM Disk Speed test, 3GB file with a Nextorage UHS-II Pro card rated at R-300MB/s, W-299MB/s I was getting a steady average of R-260MB/s, W-312MB/s (with write bursts of over 500MB/s) which is good enough for my needs).The inclusion of a MicroSD card slot for GoPros and drones is an added bonus.