PCH features confusion

Hi,

My laptop is Acer P243-M-5324G50 Makk. I am trying to find out if i can use SATA 3 SSD in my optical drive bay using a caddy.

For that i need to know if the port in optical drive bay is SATA 3.
When i generated report. I saw in PCH features there are two SATA slots both are SATA 3.
But when i scroll down in the report i see Port# 5 in which i think dvd drive is installed.

If there are only two SATA Ports, where did the port 5 came from? (maybe i'm misunderstanding this)

Can you tell seing the report if my drive bay port is sata 3?

Also there are few Pci E slots empty, how to know if those can support M.2 SSD.

I have attached the report. Can someone please guide me here.

P.S: I'm not a techie and this is first time i am attempting something like this.

  report1.HTM (Size: 127.14 KB / Downloads: 2)