Keyboard Connector - PS/2

                                  ┌─\./─┐
                                 ┌┘6■ ■5└┐
                                 │4■   ■3│
                                 └┐2■ ■1┌┘
                                  └─────┘
                         Pin In/Out Signal Name
                         ─── ────── ───────────────
                          1   I/O   +Keyboard Data
                          2   na    (reserved)
                          3  power    Ground
                          4  power  +5 Volts
                          5   I/O   +Keyboard Clock
                          6   na    (reserved)

See Also: Keyboard Connector - PC/XT
          Keyboard Connector - AT
          Cables and Pin Outs
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