This SD Extension and Card holder is designed to be mounted to the spool-holder bolts on the top of a Wanhao I3, but it could just as easily be mounted to any flat surface with some double-sided tape.There are slots for (1) full-size SD card (I keep my adapter here) as well as (6) Micro SD cards.
An SD Extension that is known to fit:
https://smile.amazon.com/gp/product/B01D9J8KQE
The stock bolts ARE long enough to hold everything in place, but I wanted to make sure to have a good mount, so used (2) M5x8 bolts.
SDHolder_rev1.stl | 383.5KB |