Dual-Slot CFexpress Type B and SD 4.0 UHS-II Card Reader USB 3.2 Gen 2 10Gbps, Compatible for Thunderbolt 3 USB3.1 and USB 3.0,Support Windows/Mac OS

Recently obtained a Nikon Z8 and wanted a chip reader for my CFExpress type B card., SanDisk Extremum PRO 128 GB. This reader worked fine right out of the box, no issues with my older PC running windows 10 pro. Chip was a little warm but nothing to worry about. The reader feels solid and transferred my photos relatively quickly. Good reader for the price.

TL;DR:1. Buy it.2. If you are not plugging it directly into your computer, you may want a USB-C to USB-C cable to avoid a potential problem with the adapters that comes with it and docks. Or, you can mark the direction that works.940+/970 MB/s read/write with a SONY Cfexpress Tough Memory Card -- that's about 7.6 Gbps plugged into my Macbook Pro (2017 15 in).My small issue is with the cable, when connected to a dock: This reader ships with a USB 3.2 A-type cable with a USB A to USB C adapter stuck on to it. This seems smart, but when connecting this through a dock (caldigit USB-C dock), I had to make sure the USB end of the cable was plugged in to the reader in one direction and not the other. In one direction, everything is fast. In the other, the drive disconnects and reconnects, bringing average speeds down to about 250 MB/s and 20 MM/s read if it even can make it through 3 GB of a 4 GB test. I am not a USB engineering, so I don't understand why this happens, but it does. If you simply replace the USB A with adapter with a simple USB C to USB C cable - everything works fine, no matter what direction you plug the cable in. I used a "DockCase" cable (ASIN B07THFJ1J5). This could be a dock problem, and not a cable problem. I suggest Trebleet mark the cable with a "top" and "bottom," but a sharpie on the metal works for me – or, they could ship the device with a USB C to USB C cable.Build quality: Overall, the reader looks and feels extremely sturdy. It gets a little warm while plugged in for over 30 minutes, but it seems cooler than the dock also connected to the computer. I'm also a little worried about card readers with springs because I've had cheap dell ones die -- but I guess my cameras have these spring loaded mechanisms and I've never had one fail there.I would definitely recommend buying this over the poorly reviewed $100+ card readers. I'll see how it compares to the built-in Canon R5 card reader I have on pre-order.

Getting very hot might be perfectly normal; I don't know because this is the first time I've used a CFexpress Type B card. To its credit, it's a metal box, which is probably used as a heat sink. I've used it only for about 32 GB, but it was fast and worked as it should.

Arrived prompt from Amazon. I'm SUPER impressed by this card reader as it's quite weighty; a solid chunk of Aluminum and helps with the heat generated by fast transfers via CFExpress. Includes a couple 6" breakout cables, too - one is USB-C to USB-C and another is USB-C to USB 3.1. Transferring with a 512 GB SanDisk CFExpress Card to my X299 Desktop I was able to achieve a transfer of roughly 380 MB/sec via USB. The only difference of course is that SSDs would hold the transfer rate whereas HDDs will burst at that for a bit until the cache fills then slow down to their max transfer speed. Using a Beyimei USB-C PCIe adapter card for my system bumped the transfers up to about 850 MB/sec with the same caveats as above. For that fast though, you'd need an NMVe M.2 or PCIe drive, but many machines are coming with them now.Really fast transfers, stable product. Also works well with the 3 foot USB-C cable supplied with my new camera (R5) taking this format. It's certainly not the cheapest card reader but so far, zero issues and I'd recommend it!

A photographer/videographer's worst nightmare happened to me using this card reader. To state possible disclaimers, I cannot exactly confirm that it was the card reader that corrupted my CFexpress type B card. However, to note, using this reader, my cfexpress card would rarely be read or recognized by my iMac (2020). When it would be recognized, it was extremely slow to load. I attempted to upload the cards data almost a dozen times, to each time it failed with an error code. While it attempted to upload, the time estimation of completion would range to days at a time, not minutes (uploading ~70gbs). Beyond this, the card was unsalvageable, and I was only able to get 50% of it uploaded; thankfully I was able to get some data-- not a complete nightmare. I now do not trust this reader and am apprehensive to use adapters for my cfexpress cards. It's not as if I can stay away from adapters/readers as there is not a native cfexpress type b port on any sort of apple product.

With Nikon's recent update to their XQD cameras to support CFExpress cards, I would need a card reader to take advantage of the potential for higher transfer rates from card to computer. This one seemed to fit the bill.At first, I had some problems. My first transfer of images via Lightroom was balky and slow. Benchmark software would not even run. I tried a couple of things to no avail. Finally, I swapped out the supplied USB-C to USB-A cable with a higher-quality cable I had, and voila! Benchmarks ran fine.While the sequential transfer rates of ~250-400 MB/sec were well short of the theoretical 1200-1700 MB/sec of which my SanDisk Extreme Pro card was capable, it was nonetheless about twice as fast as my Lexar 1400x XQD card. I only wish I had a faster XQD card to compare it to. With otherwise the same hardware, my SanDisk Extreme Pro reader hits speeds of 960 MB/sec read / 360 MB/sec write.So...mediocre transfer speed and poor-quality cables. Better choices out there unless price is more important to you than performance.

Speed is pretty good. Comes with USB.C cable and adapter for USB. A port. Works well and have Not have any problem yetIt gets warm but Not really hot compared to other brands.

Purchased this as a backup to my 90.00 primary card reader. We tested this reader and it performed perfectly as to download speed and with no heat buildup. A steal at this price.

Thought I'd give this a go to read images from a cfexpress type a card, instead of opting for the £100+ readers on here.Delivery was a little slow compared to normal amazon orders but was as discribed in the advert so no surprise.Read and write speeds are brilliant (750mbps) using the supplied cable and a little (800+) quicker using a high quality cablePackaged very well and build quality appears robust.Very pleased and less than half the cost of other readers.

Excellent quality

It works fine.

I am very pleased with the quality and performance

Looks ok, however, even while it’s not doing anything with no card inserted it’s quite warm which means it’s drawing current (power) for no reason.I’ve never seen a USB reader do this before.Worrying.