Designed to hold 15 USB thumb drives, 10 Micro SD and 8 SD cards along with a Transcend card reader. The tray will also hold standard sized SD/Micro SD carry case.
Inspired by the many USB/SD card holder/trays already out in the wild, primarily these:
Many have features that I liked but are designed to "plug" in your USB drive and require keeping track of the cap or for use on a desktop and thus too small. I needed a unit that would hold drives without worry of losing the cap and would fit neatly in a drawer or cabinet.