How to connect gripper with air tube?

#1

I bought BASIC SUITE and M1.
I’m already using Suction Cup, but I don’t know how to use the gripper.
There are two input interfaces on the gripper.

I want to know how should I connect the air tube? (which one? or both?)

#2

Dobot-M1-User-Guide has some tutorials. Only need to connect one interface. The input interface below I am connected.

#3

Thank you!

I succeeded to use the gripper (I connected below interface as you mentioned).