It's very convenient when you have few USB ports, like on a laptop. Also, it's similar for smartphones, and using this makes them more user-friendly. For those who want multiple units, we offer a discount of 185 yen per piece (for shipping). If you'd like this, please contact us before bidding so we can adjust the price. Note: You cannot read SD cards and micro SD cards simultaneously. Do not use them at the same time. Benefits: USB A + Type-C Port Hub: USB A port x 3 + USB-C port x 1 + 3.5mm jack port x 1 (expansion) TF/SD card slot x 1 + USB A port x 3 The Type C interface is for data transmission only and does not support charging. This is a Chinese product, so although it's new, there may be minor scratches. However, it is completely unused.