3.5” SD Card Reader Case This is a Case to hold a popular 3.5” Card Reader. Many new PC Cases do not have any 3.5” bays. This Case allows the SD Card Reader to be used Externally. The cable must still go inside the PC to plug into a USB header on the Motherboard. After printing, drill out the screw holes with an 1/8” drill bit. I printed it with the back down on the plate, standing up. I used a Brim to help plate adhesion and used no Support.