Technical Manual "Thunderbird/MM” Version 1.2
12.08.2005
Page 26 of 48
4.8.2 X21-2: USB 0/1 – Connector
USB1 (top)
PIN
Signal
1 USB_VCC
2 USB1-
3 USB1+
4 GND
USB0 (bottom)
PIN
Signal
1 USB
VCC
2 USB0-
3 USB0+
4 GND
4.9 X23: USB 2/3 – Connector
USB3 (top)
PIN
Signal
1 USB_VCC
2 USB3-
3 USB3+
4 GND
USB2 (bottom)
PIN
Signal
1 USB
VCC
2 USB2-
3 USB2+
4 GND
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