MicroSD

hw-125 microsd adapter is 5v input compatible but needs to be powered by 3v so it has an AMS1117-3.3 voltage regulator (marked "U") onboard to step down the 5v from VUSB to 3v. This means it will not work being powered by 3v (which I want to do for Teensy 3.2; yes, i could use teensy 3.5 but i'm saving that for something else and why not use my 3.2 if i have the extra sd card adapters). Simply desolder the voltage regulator off completely and bridge the contacts for pins 2 & 3 together (pin 2 was connected to C3 and pin 3 was connected to C2, lol). Pics soon™