How do I add an additional SSD to my Acer Aspire AL15-41?

Hello. I read on the sticker of my laptop that it is dual storage capable.

I am just opening it now to see that I have zero clue where the other connector for the other HDD slot.

Help would be appreciated. The SSD I'm trying to install alongside the factory one would be a Crucial MX500 2.5 SSD (It's the only SSD I have available currently.)