Miofive Memory Card - Ultimate Micro SD Card with USB 3.0 Type-C Card Reader 170MB/s, C10, U3, A2, V30, 4K for Dash Cams, Android Smartphones, Tablets, and Gaming Devices (128GB)

Most SD cards, even from the big name brands, usually overstate their read/write speeds, and this card is no different. There are simply too many variables involved to guarantee the same speed for every system, so manufacturers typically quote a best case theoretical speed. Yay, marketing!This card claims "up to" 170MB/s sequential read and 150MB/s sequential write, which are pretty fast speeds for a micro SD card, especially an "off brand" card. In my testing, while it didn't hit those speeds, it's still a pretty snappy card, hitting almost 100MB/s in both sequential read and write. So I'm happy with it. 100MB/s for an SD card is no slouch.It includes a USB-C 3.0 card reader that takes both micro and full size SD cards. I wanted to compare it to another USB-C 3.0 card reader I have, the Anker A8326, just to see if the reader could be the bottleneck. If it is the bottleneck, then it's the same bottleneck for both readers I tried in my system's 10Gbps USB 3.1 Type-C port.Even though it doesn't hit it's claimed top speeds, for the price you get a Type-C USB 3.0 read and 128GB that still hits nearly 100MB/s in my tests, so I consider it a good value.

The 128 GB microSD card by Miofive is made in PRC (china). The amazon description claims a 170 MB/sec read speed and 150 MB/sec write speed. I used a 2023 Dell XPS 17 and the supplied USB-C to MicroSD adapter, and the best I found was 92 MB/sec reads and 88 MB/sec writes. The $30 price seems to go with the real life speeds I tested. Higher performance cards cost twice as much. This is a decent microSD card, and under light use, has been just fine. I am curious how this will perform once it heats up.4 stars

Seems very good so far

The USB-C Drive does look nice, and when inserting the SD-card is the the push-click type, so it clips into place. I do like these until I forget it is this type and pull it out by accident.I tested the USB drive and it works fine, but could not get the full speed results I was hoping for, this may be down to my system and not having another to test I moved on.The drive works very well with my phone and it instantly recognised and the card is readable right away.Speed test on my PC gave me speeds for the card that seemed close to what is on the box at around 95 MB/s Read/Write, which to be fair is pretty decent.Overall nice little SD drive and the card in terms of speed seems decent, how well it will last over time is something I will find out about.