I had an R4SDHC with an 8GB card and all was working. And about customer support from the R4 III forget it you will never get an asnwer from them at least I never got one from them.

I called these guys already because not only them but all the websites are selling the combos with 8GB and even 16GB cards and they all claim that the card works with 4 and up SDHC cards wich is not true, at least not with the current kernel which is 3.10. Now do the math 4GB is equal to 32Gb, it doesn't say anything about supporting all the SDHC cards. Ok the place is real and the card is the best clone but, yeah there is a BUT in here, the card will read only up to 4GB SDHC if you use a 8 GB card it will not read it, they claim that it works with 8GB cards but it doesn't, even on the 'official' website it says Support 4GB-32Gb now if you pay close attention you will notice this GB and Gb and if you know something about this you will know that GB is not the same as Gb, why because un 1 byte is equal to 8 bits.