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GPIO

GPIO is a series of digital input/output interfaces that can be used to connect relays, LEDs or sensors. Using GPIO on a Pi-KVM is a feature designed for advanced users, so make sure you understand exactly what it is.

In the case of Pi-KVM, the general term GPIO refers not only to the physical interface of the Raspberry Pi, but also to various plugins (for example, for USB relays) that can also be used transparently by emulating abstract GPIO API.