October 5th, 2015 update: Absolute newest revision/version dubbed the 2016 edition by the manufacturer. Batch produced October 2015. Visible change is seen with the 2 color LED light which is now blue/red (the previous model was green/red). Now works with 161/multigame MVS cartridges. To start from the beginning of 161 MVS you must hard reset (flip power off then back on).

This plug and play device unlocks the potential of your MVS carts by instantly providing game cheats, region select, and custom game mods without the need to modify your system bios. For use with your MVS games on your AES system.

New and factory complete. The following is included within the original packaging:
MVS MagicKey x1
Menu CD x1
USB cable x1

[Important: This converter was designed for original SNK MVS game cartridges, yet it will work with 60% of the unofficial MVS carts. Compatible with 99% of the original MVS game carts.]

NEO SNK MVS MagicKey Specifications:

* MVS to AES converter function: allows you to play MVS arcade cartridges on your AES home console system (does not support the multi MVS cartridge)
* SNK game cheat code: supports all SNK MVS original arcade cartridges
* SNK game region select: it can change something in the game, such as the language and the "FATFURY" motion effect
* 8MB game ROM is modifiable
* Can upgrade the Magic Key BIOS via USB port, plug and upgrade
* Can upgrade the CPLD hard core via NDP kit

MagicKey instructions for 161 MVS and other multigame MVS carts:
1) Hold the button on the key and flip the switch (power on Neo-Geo) to get the select screen.
2) After selecting a game, you should select the country (Magic Key geographic select screen) and get the Neo-Geo intro screen.
3) If you don't get the Neo-Geo intro screen (and the geographic select screen keeps repeating), hold the button on the key and press reset (which puts you into the intro the proper Neo-Geo intro screen).