Review on 📸 Amplim Micro SD Card 512GB - New 2021 MicroSD Memory Plus Adapter, High Speed 170MB/S, A2 MicroSDXC U3 Class 10 V30 UHS-I - Compatible with Nintendo-Switch, GoPro Hero, Surface, Phone, Camera, Tablet by Jason Stokes

MicroSD Amplim 256GB looks pretty much like any other all-in-one microSD card, except it costs a bit more than competing all-in-one AND branded products. Negative review based on cost, but researched (because it made no sense to cost more): Research found the write speed to be well above average, which is great (and worth paying a little more for). Tested both inside and outside the SD adapter. There is a slight performance hit in the adapter, but very little; You might lose 1 or 2 MB/s reading and writing. Compared to the Samsung SD card adapter, the drop was the same, which tells me that the Amplim adapter works well. Read performance is pretty close to the 100MB/s advertised on the box, hitting around 92-93MB/s. Write performance, as in most cases, isn't openly advertised, but I consistently get around 86 MB/s. Which is very nice. Other 256GB MicroSD cards from Lexar, Pioneer, SanDisk, etc. claim write speeds of up to 60MB/s (some only up to 30MB/s). This map. My only complaint is the purple text on the black plastic, which makes it pretty hard to read (if you have several and are trying to check capacity). Overall it deserves 5 stars and I hope the price doesn't put people off buying it as it offers more performance than other microSD cards.