Physical dimensions and layout specification of hardware.

Connector exposing general-purpose input/output signals.

Magnetic storage device using rotating platters.

Case panel containing front-facing ports and controls.

Hardware generating graphics for a display.

Hardware controlling communication with a hard disk.

Controller logic mapping logical storage addresses to flash locations.

Motherboard connector for case buttons and indicators.

Expansion card containing a GPU and graphics memory.

Magnetic disk surface used to store data.