1200XL - How to ensure AVGCart PCB is right side up?

[Xebec]

Hey folks --

 

I have an AVGCart that i'd like to use on a 1200XL, but unfortunately the plastic case is too large.  

 

How do I ensure the AVGCart is facing the right way to not short something out when plugging into the 1200XL?

[tmp]

assuming carts plug into 1200xl with label facing up, the side with big chips and AVGCART text should be also facing up

[_The Doctor__]

Put a mr yuck sticker on the side that faces away and a happy face sticker on the side that faces up and towards you!