Need info about my ps4 slim

Hi, i have a ps4 slim and i want to clean the dust off of my ps4 by accessing it from the top, but I’ve noticed that i don’t have the grey power supply thingy on top of the power supply like every ps4 slims I’ve seen on videos/images. Is it normal and if so can i proceed safely? Thanks.

What do you mean by the grey power supply thing? Do you mean the piece of metal on top of it?