7.USB headers (10-1 pin USB11_23, USB20_12, USB20_34)

If the USB port connectors on the rear panel are inadequate, three USB headers are available for additional USB port connectors. The header labeled USB11_23 complies with the Universal Serial Bus (USB) 1.1 specification. Connect the bundled 2-port USB connector set to this header and mount the USB bracket to an open slot in the chassis.

P4B266

P4B266 USB Header

USB11_23

NC

GND

USBP2+

USBP2–

USB Power

1 5

6 10

GND

USBP3+

USBP3–

USB Power

The other two USB headers (blue) comply with USB 2.0 specification that supports up to 480 Mbps connection speed. This speed advantage over the conventional 12 Mbps on USB 1.1 allows faster Internet connection, interactive gaming, and simultaneous running of high- speed peripherals. These headers support the next generation USB peripherals such as high resolution cameras, scanners, and printers.

P4B266

P4B266 USB 2.0 Headers

USB20_12 USB20_34

USB+5V LDM1 LDP1 GND NC

5

USB+5V LDM3 LDP3 GND NC

1

1

5

6

10

6

10

USB+5V LDM2 LDP2 GND

 

USB+5V LDM4 LDP4

GND

The USB 2.0 headers, controller chipset, and jumper are optional.

2-30

Chapter 2: Hardware information