I just got my Ewin Expansion Pak today. Here are a few details that don't seem to be mentioned elsewhere. First off, compatibility is awesome. Unfortunately, saving in The Lost Vikings and Puzzle Fighter doesn't seem to work. However, Puzzle Fighter runs, at least, which is not true of the 3-in-1 (at present). Is there maybe something I'm missing, perhaps some button combo for certain save types? Full info on the stuff I tested is as follows: Title (Runs? / Saves?) Super Dodge Ball Advance JPN (Y / Y) Final Fight One JPN (Y / Y) Super Street Fighter II X Revival JPN (Y / Y) EX Monopoly JPN (Y / Y) Street Fighter Zero 3 Upper JPN (Y / Y) Super Puzzle Fighter II Turbo EUR (Y / N) The Lost Vikings USA (Y / N) Kunio Kun Nekketsu Collection 1 JPN (Y / ?) (not sure this game even uses save data - it's the NES Super Dodge Ball, for Pete's sake!) Secondly, the Pak already apparently is detected as a RAM expansion in SNEmulDS. I haven't tested any other homebrew with it, but I'm guessing many people will be surprised with what works. Finally, Opera. I got the first part of this info off of a Japanese page, and it's the reason I actually bought this thing. I wanted to use a clean Opera ROM. Well, actually, I don't much care if it's clean or not, but I wanted to use the Japanese version of Opera, and there's no patch for that. Anyway, to use Opera without patching on an R4 with the Ewin Expansion Pak, open the GBA Loader and press L+R. Everything else should be pretty obvious from here, except MAYBE for non-R4 users, who may have to QUICKLY turn off their DSes and turn them on again before starting the browser. But that's not all! Unlike with the 3-in-1, you can use it with the OFFICIAL Opera card! Here's how: 1. Start the GBA Loader utility. 2. Press L+R. 3. Press A to patch the SDRAM. 4. After it's finished patching it (if you have an R4, it will take you to the R4 menu; this is fine), take out your slot-1 card, put in Opera, and QUICKLY turn your DS off, then on. 5. Start Opera as normal! Hopefully this info helps people out. I'm a little disappointed about saves in The Lost Vikings and Puzzle Fighter, but at least the latter runs!