Abstract: A computing apparatus adapted for rear access installation of a computer card with blind mating. The apparatus includes an enclosure with a rear access opening and a circuit board mounted in an interior space of the enclosure with an upward facing connector. The apparatus includes a guide assembly comprising a guide mounted within the interior space, and the guide includes a travel surface extending over the upward facing connector of the circuit board. The apparatus includes a card carrier with a frame that houses a computer card, e.g., a PCIe card, which includes a connector extending outward from the card carrier frame. The card carrier rides upon the travel surface when the card carrier is inserted into the enclosure and then pivots about a contact surface in the guide assembly when the computer card connector is proximate to the upward facing connector to provide vertical insertion of the computer card.