Review on uni USB C SD Card Reader Adapter USB 3.0 - Supports SD/Micro SD/SDHC/SDXC/MMC - Compatible with MacBook Pro, MacBook Air, iPad Pro 2018, Galaxy S20, Huawei Mate 30, and More by Markus Calderon

packaging and build quality are excellent. The fit and finish of the cards and caps are excellent. If you use Micro SD cards and UHS-I SD cards, this is a good choice. What I want to know before buying is that while it works with UHS-II SD cards, it doesn't improve reading speeds. higher speeds and be limited to UHS-I speeds of up to 104 Mbps. I have USB 3.1 ports on my PC and when I use it to read a Lexar 128GB Professional 1667x UHS-II SDXC memory card the speed is around 80Mbps. If you want to read UHS-II cards I recommend buying a card reader designed for UHS-II cards to get much faster read speeds, hopefully closer to a 250Mbps memory card rating. In terms of performance, while it's good and capable of reading large files, it just doesn't show as much promise as other fully UHS-II compatible card readers.