0x2381197b is for SD. This is the one that works fine incorporated into info.plist.
0x2382197b seems to be for MMC, but I can't find any device in windows device manager that corresponds to this. There are two SD host controllers in device manager: One that says "SD Host Controller" and one that says "SD/MMC Host Controller". Both of them use the same 0x2381197b ID. I'm pretty sure that 0x2382197b corresponds to MMC, though, since the driver crashes when this ID is entered into Info.plist and I insert an MMC card; it doesn't do anything otherwise.