This memory card reader/holder all-in-one is made very well and is much heavier than I expected. It holds a mix of SD and microSD cards, and has the reader built in with a USB-C connector. the unit is big enough, in my opinion, it could have also included an older USB 3.0 connector/adapter, for maximum flexibility. As it is, I'll have to bring my own adapter to make sure I can use this with a computer that doesn't have a USB-C connector, which includes a large amount of desktops. Also, I think the price is a bit high for what you are getting. The reader is fast, no doubt, and was recognized by my Windows 10 computer instantly, but so are other units that cost 1/2 as much. The ability to hold cards and be a sturdy case is the extra value add, and it does deliver in this respect. The push-out method of opening it also leaves me questioning if or when the plastic nubs that holds it closed will wear out, as you must apply high friction force to it every time you open or close it. The price, weight, opening method, and lack of USB 3.0 adapter, all together, cost a star.Four Star High Speed SD/microSD card Reader All-in-One Card Holder