the.com/peripheral

The stuff you buy after the computer, which costs as much as the computer.

means Something on the edge of the main thing — secondary, add-on, or not central to the core purpose.

from From Greek 'peripherein' — 'to carry around' (peri- 'around' + pherein 'to carry'), the same root that gives us 'periphery,' the boundary line around a shape. Something peripheral sits out on that boundary, orbiting the main event rather than being it — which is exactly the mouse, the printer, and the webcam's station in life.

etymology
from greek peripherein, to carry around
original use
meant anything orbiting the edge, not just tech
irony
mice and keyboards are peripheral yet essential
vision term
also the edges of sight, not the point you're staring at
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