Posted By: wraggster
Heres an excerpt
I tested both of these out with a Supercard, and an M3, and it works beautifully! It really is so simple to use, even the technically challenged can do it. All you do is plug this thing in the top, put your favourite flashcard in the bottom and you’re away! Both carts tested sit flush with the DS just like a regular cart. Booting up the DS with the switch on ‘GBA’ boots directly into the respective menus on the Supercard/M3 cards that were tested. If you have an MK2/3, which goes through the NDS slot, you can flick the tiny switch on the MK4, which boots directly into NDS mode. You can then select to boot to the MK4-mini/4 where a simple menu allows you to either boot into GBA mode again, or swap the MK4 in the slot for an MK2/3 device.
Read the Rest of the Review HERE