Sony PCV-RX270DS - Manual (Page 66)

VAIO Digital Studio Reference Manual 52
USB23 Header (connects to USB1 on front panel)
Pin
Signal Name
1 +3V
2 NP1 (NC)
3 NP3
4 Key (no mount)
5 USBVCC2
6 USBVCC3 (NC)
7 USBP2#
8 USBP3# (NC)
9 USBP2
10 USBP3 (NC)
11 GND
12 GND (NC)
USB1, USB2 connectors
Pin
Signal Name
1 USBVCC1 *
2 USBP0#
3 USBP0
4 Ground
5 USBVCC2
*
6 USBP1#
7 USBP1
8 Ground
* Uses over-current protector.