3 legacy device configuration, 4 usb configuration, Legacy device configuration -21 – Asus ESC4000/IB User Manual

Page 91: Usb configuration -21, Serial port1 address [3f8/irq4, Serial port2 address [2f8/irq3, Legacy usb support [enabled, Usb 2.0 controller mode [hispeed, Bios ehci hand-off [enabled