High compatibility, all-in-one card reader supports most available cards, for SD card, CF card, TF card, M2 card and MMC/MS and SIM/SMART cards. Dual USB 3.0 ports hub enable two devices fast ...

What You Get: PowerExpand 2-in-1 SD 4.0 Card Reader, welcome guide, 18-month warranty, and friendly customer service.

But [Neutrino] made his own using an ESP8266 married to a card reader. It all starts with the old trick of soldering a header to an SD card adapter. The USB port is still there, but it is only for ...