Screw type for Wii U system

[Gamemoose]

I recently scored an 8 GB Wii U sans power supply and gamepad charger for a good price. The owner said his teenage boys took the console apart to see why it wouldn't power up but figured it was a bad power supply. They put it back together but lost all but one screw.

 

I tested it and both the system and pad work great so I'd like to replace the screws. Unfortunately, Google has not been kind-I read about people taking them apart but not really mentioning the screw type other than it was a mix of Phillips and tri-wing.

 

Before I take the remainging screw out to compare it with others at the hardware store (and hope not to lose it), does anyone know what type of screw these are?

 

Thanks!