How can i tell if a native instruments tractor kontrol s4 is a ml 1 mk2 or mk3

Steveo1080

I am trying to buy a character control as for but I don't know. If its the MK1 and K2 or MK three, please help. How can I tell the difference?

Sûlherokhh

Mk 1 has small LED slits on the hotcue buttons. Jogwheel has a plastic top.

Mk 2 has large RGB hotcue pads. Jogwheel has a metal top.

Mk 3 is the only one where both decks have the same orientation (tempo fader on the right side) instead of being mirrored. Also, motorized joghweels and LED stripes around it.

Go search google for photos for all three. should be easy to find.

Also: Look here: https://support.native-instruments.com/hc/en-us/articles/115004537789-TRAKTOR-KONTROL-S4-Troubleshooting-Guide