After Apple added SDXC and ExFAT compatibility to Mac OS X in 10.6.5, I got to wondering if they had added similar compatibility to the iPad in iOS 4.2.1. Although the hardware reader is probably not SDXC-capable, it wouldn’t have been too hard to add the ExFAT driver from Mac OS X to iOS. Then, the iPad could import from SD cards formatted as ExFAT and USB-connected cameras.