Update: Shapeways makes a universal collar that you can replace the original with if you do not want to remove the original security tabs: <a href="https://www.shapeways.com/product/VRHZKBHUZ/n64-universal-cartridge-slot" target="_blank" rel="nofollow">https://www.shapeways.com/product/VRHZKBHUZ/n64-universal-cartridge-slot</a><br /><br />Want to play US games on your Japanese N64? Or play Japanese games on your US console? Let me show you how to do it in just a few minutes!<br /><br /><br />If you don't like cutting the slot you can replace it with one from a broken donor N64 OR SexyFerret69 informs me that you can get a pre-made one at <a href="https://www.shapeways.com/product/VRHZKBHUZ/n64-universal-cartridge-slot" target="_blank" rel="nofollow">https://www.shapeways.com/product/VRHZKBHUZ/n64-universal-cartridge-slot</a><br /><br />Questions, Comment or Hardware/Software review request? Call Rob!<br /><br />On Steam, Origin, Skype and Xbox Live: Retr0Rob (first “0” is a zero)<br />steamcommunity.com/id/retr0rob<br />*NEW* Facebook: www.facebook.com/retr0rob<br />Twitter: @retr0rob<br />Email: [email protected]<br />...<br /><a href="https://www.youtube.com/watch?v=kBJK5jFCOXM" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=kBJK5jFCOXM</a>