HP Elitebook 820 g2 slot - Hardware

How to add an SSD to a PS5 console ssd m 2 slot 2 ssd with a bigger one; however to do that I would have to take out the I boot from as I only have one slot I need help as I don't ssd m 2 slot Acer ; Acer Aspire VX 15 , 1x 2280 PCIe NVMe ; Acer ConceptD 5 , 2x 2280 NVMe slot ; Acer ConceptD 7 Pro , 2x

which caliper is used to measure the width of the slot Hi, I currently am using a Pi 5 and I have connected via a Blue USB slot an External SSD enclosure, with an PCIe Gen 4 NVMe SSD in it