HP dx7300 HP Compaq dx7300 and dc7700 Business PC Technical Reference Guide, 1 - Page 100
Universal Serial Bus Interface, Table 5-17., ICH8 USB Port Mapping
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Input/Output Interfaces 5.7 Universal 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 USB ports, two front panel USB ports (which may be disabled) and six USB ports on the rear panel. 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 5-17 shows the mapping of the USB ports. USB ICH8 Controller USB 1.1 #1, USB 2.0 #1 USB 1.1 #2 USB 2.0 #1 USB 1.1 #3 USB 2.0 #1 USB 1.1 #4 USB 2.0 #2 USB 1.1 #5 USB 2.0 #2 Signals Data 0P, 0N Data 1P, 1N Data 2P, 2N Data 3P, 3N Data 4-5P/N Data 6P, 6N Data 7P, 7N Data 8P, 8N Data 9P, 9N Table 5-17. ICH8 USB Port Mapping USB Connector Location USDT, SFF, ST Form Factors MT & CMT Form Factors Rear panel quad USB stack Rear panel quad USB stack Rear panel quad USB stack Rear panel quad USB stack Rear panel dual USB with RJ-45 Rear panel quad USB stack Rear panel dual USB with RJ-45 Rear panel quad USB stack Not used Not used Rear panel quad USB stack Rear panel quad USB stack Front panel USB Front panel USB Rear panel dual USB with RJ-45 Rear panel dual USB with RJ-45 Front panel USB Front panel USB 5-22 www.hp.com Technical Reference Guide