For questions about the components of retro devices (computers, etc.)
The term "hardware" encompasses components on circuit boards, physical input devices, power supplies, displays, and other devices that contain or are components that are capable of interfacing electronically with other components or devices. It does not include plastic cases, purely mechanical components (e.g. a laptop's hinge) or non-electronic parts of a system (e.g. the glass pane of a CRT display), but it does include electronic systems that have mechanical parts (e.g. a floppy diskette reader).
This tag should be used for questions about hardware as defined in the previous paragraph. For questions about restoring computer cases and similar things, use the restoration tag.