Supermicro X7DWN Plus User Manual page 21

Chapter 1: Introduction
The Super I/O supports one PC-compatible printer port (SPP), Bidirectional Printer
Port (BPP), Enhanced Parallel Port (EPP) or Extended Capabilities Port (ECP).
The Super I/O provides functions that comply with ACPI (Advanced Confi guration
and Power Interface), which includes support of legacy and ACPI power manage-
ment through an SMI or SCI function pin. It also features auto power management
to reduce power consumption.
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