Where can I plug SSD in the Asus H110M CS motherboard?

what is m 2 slot on motherboard motherboard m 2 slot CPU Support: 10th Gen Intel Core Processors · RAM Support: DDR4 2933 MHz · Graphics Output: HDMI, DVI-D, D-Sub · 4 SATA3, 1 Ultra (PCIe Gen3 x4 & motherboard with m2 slot This video explains how to select which slot to use on a motherboard for the best

land slot auto I am unable to use my 2nd SSD i bought I bought a second 2 TB 980 pro sdd and it shows up in