Some embodiments provide robotic multiple-slot test card support systems comprising: a test robot system comprising a robotic arm and an end-effector; and a first card support apparatus comprising: a plurality of lateral supports; a plurality of angled shelf supports each extending between a pair of the plurality of lateral supports defining an array of angled card slots, wherein the shelf supports along the columns are vertically separated and each comprises: a guide exterior surface and an interior surface configured to support a payment test card with at least a portion of a face of the test card being flush with the interior surface; wherein each card slot repeatedly positions the respective test card at substantially the same position within the card slot each time the test card is released by the end-effector enabling repeated accurate retrieval by the end-effector.