Just bought a new Z. Where is the A/C low side port located?

BlackWave

Hello forum, just bought my first 370z last week so not sure where everything is located. My a/c runs but it doesnt shoot out cold air. Just bought some r-134a and trying to find the low side port to charge it. I can only find the "H" labeled port and Im assuming that means "high". The instructions said make sure not to connect the coupler to the high side or the can might explode so i want to stay clear of the "H"

I have attached some pics of what I am looking at here. I followed down the metal pipe thinking that the low side would be on the same piece but it was nowhere to be found. Any help would be appreciated.