Pros: Works great, once I updated the firmware.

Cons: Would not work until I updated the firmware.

Other Thoughts: No instructions or software was included in my package. After finding the software online at the manufacturer's website I was able to use their conversion utility on my .gba files. Once I loaded my 2GB SD card with several titles all I got was a solid white screen. I found that there was updated firmware available. After flashing everything worked just fine.

Bottomline: This one isn't plug and play. If you're savvy enough to figure out all the hoops required to get this thing going then it's well worth the price. Everything needed can be found at http://eng.supercard.cn/manual/sd.htm - Good luck!

Pros: Good price. Bought this over a year ago and the price is still comparable. Accepts a majority of ROMs that I've thrown at the device. Accepts standard SDs which means if you have an adapter, you can use those old Mini and Micro SD cards you have laying around. Good build, doesn't feel cheap.

Cons: You need to patch the roms. I guess I'm used to my R4 and just dragging and dropping files. I also get errors with some ROMs that I know are good because my modified XBOX plays them. Some games like Mario Kart Super Circuit and Metroid Fusion get a lot of lag with this card and I'm not sure why. The size of the card is quite bulky when used with a DS Lite.

Other Thoughts: I wouldn't recommend this to play DS games but for the price its perfect for GBA games. I have no regrets with this card.

Bottomline: Get it for GBA games but for DS games there are better choices.

Pros: -This flash card have a very good built quality, SD Card goes in and out easily, It also fit perfectly on the GBA (stick out à little about 5mm).
-The chips used in are from many famous brand, so no problem about reliability.
-Most GBA games works on it (all my favorite games works like: Super Mario Advance serie, Final Fantasy Serie, Zelda...) and also all the homebrew (emulators...).
-Finally with a passcard/DS Slot 1 linker, the supercard become a pretty nice expansion pak for the DS Browser for example, and it plays also most of the DS games (old games better than the newer).

Cons: -You really need to use the software before putting roms on it or else you'll get a white screen, sometimes you also need to play a little with the files (like putting a no-patched rom) in order to make it work, but after some tries, you'll get the way how to make it work.
-Update seems to have stopped, but it's not a big problem since the last one make most of the games works.

Other Thoughts:

Bottomline: At this price, it's still for my opinion the best GBA linker, so you should buy it!

Pros: Poco se puede añadir respecto a lo que otros han comentado.Es una de las mejores opciones para jugar a juegos de DS via slot 2.Con apenas un passme (o superkey) estaremos jugando a todas las roms de ds sin casi excepciones.El precio, de lejos, lo mejor, junto al acabado.

Cons: Lo peor que tiene es, sin duda, su compatibilidad para juegos de gba. pPor mucho que digan en las otras reviews la compatibilidad es baja y te encontraras MUCHOS juegos que no son compatibles, algo que resulta frustrante. El tener que parchear cada rom es tambien algo aburrido.

Other Thoughts: Una de las mejores opciones para DS usando cartucho slot 2, barata y comoda, con una impresionante lista de compatibilidad. Mejor olvidate de gba. ;P

Bottomline: yo