ASRock B150M-PIO User Manual - Page 57

USB Configuration, Legacy USB Support, PS/2 Stimulator

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4.6.5 USB Configuration Legacy USB Support Enable or disable Legacy OS Support for USB 2.0 devices. If you encounter USB compatibility issues it is recommended to disable legacy USB support. Select UEFI Setup Only to support USB devices under the UEFI setup and Windows/Linux operating systems only. PS/2 Stimulator Enable PS/2 Stimulator. This should be enabled for the complete USB keyboard legacy support for non-USB aware OSes. *Enable this option if you install Windows 7. 52 English

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English
4.6.5
USB Configuration
Legacy USB Support
Enable or disable Legacy OS Support for USB 2.0 devices. If you encounter USB
compatibility issues it is recommended to disable legacy USB support. Select UEFI
Setup Only to support USB devices under the UEFI setup and Windows/Linux
operating systems only.
PS/2 Stimulator
Enable PS/2 Stimulator. °is should be enabled for the complete USB keyboard
legacy support for non-USB aware OSes.
*Enable this option if you install Windows 7.