Input/Output Interfaces

5.7Universal Serial Bus Interface

The Universal Serial Bus (USB) interface provides asynchronous/isochronous data transfers with compatible peripherals such as keyboards, printers, or modems. This high-speed interface supports hot-plugging of compatible devices, making possible system configuration changes without powering down or even rebooting systems.

These systems provide eight externally-accessible USB ports, two front panel USB ports (which may be disabled) and six USB ports on the rear panel. In addition, the SFF and CMT form factors support a media reader accessory that uses two USB ports through a system board connection.

The USB ports are dynamically configured to either a USB 1.1 controller or the USB 2.0 controller depending on the capability of the peripheral device. The 1.1 controllers provide a maximum transfer rate of 12 Mb/s while the 2.0 controller provides a maximum transfer rate of 480 Mb/s. Table 5-7 shows the mapping of the USB ports.

USB

 

 

Table 5-7.

 

 

ICH10 USB Port Mapping

 

 

 

ICH10

 

 

Controller

Signals

USB Connector Location (all form factors

 

 

 

USB 1.1 #1,

Data 0P, 0N

System board header P151

USB 2.0 #1

 

 

Data 1P, 1N

not connected

 

 

 

 

USB 1.1 #2

Data 2P, 2N

System board header P150

USB 2.0 #1

 

 

Data 3P, 3N

System board header P150

 

 

 

 

USB 1.1 #3

Data 4P, 4N

Front panel USB

USB 2.0 #1

 

 

Data 5P, 5N

Front panel USB

 

 

 

 

USB 1.1 #4

Data 6P, 6N

Rear panel USB

USB 2.0 #2

 

 

Data 7P, 7N

Rear panel USB

 

 

 

 

USB 1.1 #5

Data 8P, 8N

Rear panel USB

USB 2.0 #2

 

 

Data 9P, 9N

Rear panel USB

 

 

 

 

USB 1.1 #6

Data 10P, 10N

Rear panel USB

USB 2.0 #2

 

 

Data 11P, 11N

Rear panel USB

 

 

 

 

5.7.1 USB Connector

These systems provide type-A USB ports as shown in Figure 5-7.

1

2

3

4

Figure 5-8. Universal Serial Bus Connector (as viewed from rear of chassis)

 

Technical Reference Guide

www.hp.com

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