Aspire E5-571G-55ST RAM slots issue

I have Aspire E5-571G-55ST laptop and tools like CPU-Z and Speccy show that I have 2/4 slots used... Even Windows Task Manager shows that I'm only using 2/4 slots... But when I opened up the laptop to put in 2 RAM's in the 2 leftover slots, I found out that the motherboard has only 2 physical slots, or I'm not seeing good???

The motherboard is:

Acer EA50_HB

Chipset is: Intel Haswell-ULT rev. 0B South bridge: H8x/P8x rev. C1

Bios:

Insyde corp. v 1.32

Can someone help me out to figure this out? Does it have 2 or 4 slots?

Edit: Here are the pictures:

If you guys would agree, I think tools like Speccy & CPU-Z can indeed make a mistake... But it shows I have 4 slots on Windows's task manager as well !!! This is really odd...

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