Foxconn Quantumian1 User Manual - Page 39
USB Configuration, ► All USB Devices
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USB Configuration Aptio Setup Utility - C opyright (C) 2011 American Megatrends, Inc. Advanced USB Configuration All USB Devices EHCI Controller 1 EHCI Controller 2 [Enabled] [Enabled] [Enabled] Enabled/Disabled All USB Devices Legacy USB Configuration �Le�ga�c�y �US�B�S�up�p�or�t En�ab�l�ed�] Legacy USB 3.0 Support [Enabled] XHCI Hand-off [Enabled] EHCI Hand-off [Enabled] Legacy USB hardware delays and time-outs: USB Transfer time-out [20 sec] Device reset time-out [20 sec] Device power-up delay [Auto] → ← : Select Screen ↑ ↓ : Select Item Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F3: Optimized Defaults F4: Save & Exit ESC: Exit 3 Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc. ► All USB Devices This item is used to enable or disable all USB devices. ► EHCI Controller 1/2 This item is used to enable or disable USB 2.0(EHCI) support. ► Legacy USB Support This item is used to enable the support for USB devices on legacy OS. If you have a USB keyboard or mouse, set to enabled. [Enabled]: This option will enable the legacy USB support. [Disabled]: This option will keep USB devices available only for EFI applications. [Auto]: This option will disable the legacy support if no USB devices are connected. ► Legacy USB 3.0 Support This item is used to enable or disable legacy USB 3.0(XHCI) controller support. ► XHCI Hand-off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver. ► EHCI Hand-off This is a workaround for OSes without EHCI hand-off support. The EHCI ownership change should be claimed by EHCI driver. ► USB Transfer time-out This item is used to select a time-out value for Control,Bulk and Interrupt Transfers. Default value is [20 sec]. ► Device reset time-out This item is used to select the USB mass storage device start unit command time-out. Default value is [20 sec]. ► Device power-up delay This item is used to set the maximum time the device will take before it can report itself to the host controller. 32