Bad name for picture
There are two images named "Hard Disk" in the collection of images. Only one is correctly labeled. The one with the "Doodly Club June 2018" badge is not a hard disk. It is one a card (hard disks don't go on cards), it has a fan (hard drives don't need cooling), and it plugs into the motherboard via a slot (hard disks don't plug into the motherboard via a slot; their connection is very different).
My guess is that the image is a graphics card that got mislabeled as a hard disk.