Asus RS500A-S6/PS4 - Manual (Page 84)

5-20 Chapter 5: BIOS setup
SATA-IDE Ports Auto Clk Ctrl [Disabled]
When set to [Enabled], the system will turn off the clocks for the unused SATA
ports in IDE modes. Doing so will enable some power savings.
Configuration options: [Disabled] [Enabled]
The hot-plug function will be disabled when turning off the clock for the SATA
port.
SATA-AHCI Ports Auto Clk Ctrl [Disabled]
When set to [Enabled], the system will turn off the clocks for the unused SATA
ports in AHCI modes. Doing so will enable some power savings.
Configuration options: [Disabled] [Enabled]
The hot-plug function will be disabled when turning off the clock for the SATA
port.
SATA PORT0/1/2/3/4/5 MODE [Auto]
When set to [GEN1], the SATA prot will run at GEN1 mode. Setting to [Auto]
will leave the SATA port to run at the default mode.
Configuration options: [Auto] [GEN1]
OHCI HC (Bus 0 Dev 18 Fn 0) [Enabled]
Configuration options: [Disabled] [Enabled]
OHCI HC (Bus 0 Dev 18 Fn 1) [Enabled]
Configuration options: [Disabled] [Enabled]
EHCI HC (Bus 0 Dev 18 Fn 2) [Enabled]
Configuration options: [Disabled] [Enabled]
OHCI HC (Bus 0 Dev 19 Fn 0) [Enabled]
Configuration options: [Disabled] [Enabled]
OHCI HC (Bus 0 Dev 19 Fn 1) [Enabled]
Configuration options: [Disabled] [Enabled]
EHCI HC (Bus 0 Dev 19 Fn 2) [Enabled]
Configuration options: [Disabled] [Enabled]
OHCI HC (Bus 0 Dev 20 Fn 5) [Enabled]
Configuration options: [Disabled] [Enabled]