HP ROM-Based Setup Utility User Guide

USB Control
The USB Control menu determines how USB ports and embedded devices operate at startup:
• When USB Enabled is selected, all USB ports and embedded devices are enabled.
• When USB Disabled is selected, all USB ports and embedded devices are disabled.
• When Legacy USB Disabled is selected, all USB ports are enabled under a USB-aware OS,
but USB is not supported during POST or RBSU. Legacy USB Disabled also disables iLO virtual
devices.
• When External USB Port Disabled is selected, external USB ports are disabled. Under this
option, embedded USB devices still have full support under the ROM and OS.
USB 2.0 EHCI Controller
The USB 2.0 EHCI Controller option is a toggle setting that enables or disables the high-speed
USB 2.0 controller.
164 RBSU menu-driven interface, version 2.xx (G5 and earlier servers)