Sony PCV-E203 - Manual (Page 60)

VAIO MicroTower System Reference 52
USB Connectors
There are two standard USB ports that permit connection of two USB
peripheral devices directly to the system without having to use an
external hub. If more USB devices are needed, connect an external hub to
either USB1 or USB2.
Pin Signal Name
1 PWR
2 SIGNAL
3 SIGNAL
4 GND
✍
USB ports are included to provide state-of-the-art technology. Your operating system
supports a limited number of USB devices. You may need to install software (device
drivers) supplied with your USB device before using the USB device.
KY0033.VSD
USB2
USB1