Working great so far. I found out that my Sony Ericsson phone had a whopping 16GB M2 memory card inside of it, which really shocked me! I don't remember putting that in there at all. It's far too much space for a PHONE! So what I did was, since I was running low on space on my PSP, I brought this adaptor to use the 16GB card that was in my phone, in my PSP. Heck, an M2 and a PRO DUO both have the same read/write speed, so this was such a lovely upgrade lol. All games work fine, from what I've seen so far. Excellent product.