Usb_Pwr1, Usb_Pwr2-Usb1、Usb2 Power Select; At-Atx Power-On Mode Setting - JHCTech ALAD-A1001T User Manual

2.3.2 USB_PWR1, USB_PWR2-USB1、USB2 Power Select

2.3.3 AT-ATX Power-on mode setting

Figure 2.7
Figure 2.8
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User's Manual