Quick remix of the excellent Gridfinity USB A&C Holder by Jacob with a little more clearance for your chunkier devices

Differences of the remix compared to the original

• Decreased both sets of ports from 4 to 3
• Increased to half height to allow USB-As to plug in all the way
• Chamfered the edges
• Added a little more clearance to the USB-As for one of my thumb drives that doesn't have rounded edges on the plug