Where is the A/C Low-Pressure Recharge Port Located?

Hello, I am trying to find the low-pressure recharge port on the vehicle listed above pop, but I cannot find it. I only found 2 ports, one that's a mystery port right on the compressor or something close to it and the other that's the high-pressure port. I have tried googling it but nothing of use has shown up. I posted this earlier, but it put it in engine oil (for some reason), so I am trying this again and praying it's in the right category this time.