Interface plugs! Ubiquitous yet vital part of the modern cyborg!
From the novel "Hardwired" by Walter Jon Williams, a fundamental influence on 2020 ( and a 2020 sourcebook!) here is an image of the two protagonists. You can clearly see Cowboy's plugs, of which he is quite proud, having been a combat flyer.
Here is a 2020 image, using wrist plugs:
In Night City, they are not only a vital part of your gear setup, but also a part of your style accessory package, like a smartphone. In other parts of the world, they may be a negative social value. In poorer places, they are commonly sported by chipheads, wireheads - braindance addicts.
In this 2077 image, you can see the interface cables running into the back of the Netrunners head:
Tiny little cat ears? Siiiiiigh. Why, J? Why?