ASRock H87M User Manual - Page 86

USB Configuration, USB Controller, Legacy USB Support

Page 86 highlights

4.4.8 USB Configuration H87M USB Controller Enable or disable all the USB 2.0 ports. USB 3.0 Controller Enable or disable all the USB 3.0 ports. 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. Legacy USB 3.0 Support Enable or disable Legacy OS Support for USB 3.0 devices. 81 English

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81
English
4.4.8
USB Configuration
USB Controller
Enable or disable all the USB 2.0 ports.
USB 3.0 Controller
Enable or disable all the USB 3.0 ports.
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.
Legacy USB 3.0 Support
Enable or disable Legacy OS Support for USB 3.0 devices.