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第四章:BIOS 程序設置
4.4.7 
USB Configuration
Legacy USB Support [Enabled]
本項目允許您開啟或關閉支持 legacy USB 設備。
設置值有:[Enabled] [Disabled] [Auto]
EHCI Hand-off [Disabled]
本項目允許您開啟或關閉支持  B I O S  E H C I  h a n d-o f f。設置值有:
[Disabled] [Enabled]
USB hardware delays and time-outs
USB transfer time-out [20 sec]
允許您選擇 USB 轉移暫停值。設置值有:[1 sec] [5 sec] [10 sec] [20 sec]
Device reset time-out [20 sec]
允許您選擇  USB  設備重置暫停值。設置值有:[10  sec]  [20  sec]  [30 
sec] [40 sec]
Enabled Legacy USB support. 
AUTO option disables legacy 
support if no USB devices 
are connected. DISABLE 
option will keep USB devices 
available only for EFI 
applications.
  USB Configuration
  USB Devices:
      1 Drive, 2 Hubs
  Legacy USB Support  
   
[Enabled]
  EHCI Hand-off  
   
[Disabled]
  
  USB hardware delays and time-outs
  USB transfer time-out  
   
[20 sec]
  Device reset time-out  
   
[20 sec]
  Mass Storage Devices:
 USB Ports Configuration
→←: 
Select Screen 
↑↓:
  Select Item 
Enter: Select Item 
+/-: Change Opt. 
F1: General Help 
F2: Previous Values
F5: Optimized Defaults 
F10: Save & Exit 
ESC: Exit
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