User manual

21 ARK-DS762 User Manual
Chapter 3 BIOS Settings
 USB Configuration
USB Configuration Parameters.
– Legacy USB Support: Enable 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
– EHCI Hand-off: This is a workaround for 0Ses without EHCI hand-off support.
The EHCI ownership change should be claimed by EHCI driver.
– USB transfer time-out: The time-out value for Control, Bulk, and Interrupt
transfers. The choice: 1 sec, 5 sec, 10 sec, 20 sec
– Device reset time-out: USB mass storage device Start Unit Command time-
out. The choice: 10 sec, 20 sec, 30 sec, 40 sec
– Device power-up delay: USB mass storage device Start Unit Command time-
out.
Figure 3.8 USB Configuration setup screen