ALio Proto Boards Crowd Supply ALio Proto Boards are designed to build prototypes containing SMD and through-hole components without using an extra breakout board. These boards incorporate a double-layer BUS for wire-free connections, micro-SD/SD card breakout, and a 2-in-1 micro-USB/mini-USB pad that makes project powering and connecting easy. The ALio proto boards are available in ALio Basic, ALio Embedded, and ALio Arduino variants that fit all SOIC, SOP, and SO type ICs.