The slots on these are supposed to support SDHC, C:Amie. I've used an 8 GB SDHC card in my WM8505s without a problem. I've noticed, though, that it sometimes has trouble reading old cards. Is this a brand new card, qq12iup? Also, check the formatting of the card on a PC. If it's formatted to NTFS, CE 6 can't read that without special software. It should be formatted to FAT32. Even if it's already in that format, reformatting and then trying it again can't hurt.