Mini USB Memory Card Reader for M2 / Micro SD(TF) Memory Card, Compatible with SDHC. The reader is designed with a USB connector and a memory expansion slot that accepts a microSD card,microSDHC and M2. Combine it with a microSD card and you've got the best mobile gear for your phone. This mobile-ready reader eliminates the need to carry additional USB transfer cables and the typical wait for bluetooth technology slow file transfers between phones and PCs.