Review on TopSD Duplicator: Portable Flash Duplicator 🔄 - Copy from 1 to 2 Target SD/MicroSD by Wayne Drakh

So this does exactly what should be good, although it would be nice to have a website for support. As mentioned in previous posts, the SD card adapters are defective. The micro SD card doesn't slide in easily, so it looks like you'll break something if you try to insert the card. I found a manufacturer's website similar to this product and noticed that the device copies the FAT table from the source. So if you are trying to move data to a larger SD card, it means your device cannot access any storage other than the size of the original SD card. This does not work for me. A copy is definitely faster than on a PC, but I have to return this product.