Supermicro 6028R-E1CR12T User Manual page 109

Chapter 7: BIOS
Port 60/64 Emulation
Select Enabled to support I/O port 60h/64h emulation, which will provide complete
legacy USB keyboard support for the operating systems that do not support legacy
USB devices. The options are Disabled and Enabled.
USB 3.0 Support
Select Enabled for USB 3.0 support. The options are Smart Auto, Auto, Enabled,
and Disabled.
EHCI1
Select Enabled to enable EHCI (Enhanced Host Controller Interface) support on
USB 2.0 connector #1 (-at least one USB 2.0 connector should be enabled for EHCI
support.) The options are Disabled and Enabled.
EHCI2
Select Enabled to enable EHCI (Enhanced Host Controller Interface) support on
USB 2.0 connector #2 (-at least one USB 2.0 connector should be enabled for EHCI
support.) The options are Disabled and Enabled.
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