U-Disk Plus / Industry design

In recent years, the capacity of micro SD card escalating. A few years ago the biggest capacity is 1GB, 128GB now. Each upgrade some micro SD card will certainly be eliminated. I have more than 4 to be eliminated because of the small capacity.
U-Disk Plus is similar to a card reader. The difference is that itself has 16GB of storage space, can be inserted 4 microSD card at the same time, and 4 microSD card can be into one disk by software.