HP Compaq dc7600 MT Technical Reference Guide

Technical Reference Guide www.hp.com 5-25
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.
As shown in Figure 5-8, the USB interface is provided by the 82801 component. All systems
provide as total of eight USB ports, two USB ports accessible at the front of the unit 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.
Figure 5-8. USB I/F, Block Diagram
82801 ICH8
USB 1.1
Front Panel
Rear Panel
Cntlr. #1
USB 1.1
Cntlr. #2
USB 1.1
Cntlr. #3
USB 1.1
Cntlr. #4
USB 2.0
Cntlr.
1.1 0
1.1 1
1.1 2
1.1 3
1.1 4
1.1 5
1.1 6
1.1 7
Data 0
USB Port 1
2.0 0
2.0 1
2.0 2
2.0 3
2.0 4
2.0 5
2.0 6
2.0 7
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
USB Port 2
USB Port 3
USB Port 4
USB Port 5
USB Port 6
USB Port 7
USB Port 8

HP Compaq dc7600 MT Specifications

General

Memory	Up to 4 GB DDR2 SDRAM
Audio	Integrated High Definition Audio
Expansion Slots	1 PCI Express x16, 1 PCI Express x1, 2 PCI
Form Factor	Microtower
Processor	Intel Pentium 4 or Intel Celeron D
Chipset	Intel 945G Express
Hard Drive	40 GB to 160GB SATA
Optical Drive	DVD-ROM, DVD+/-RW
Graphics	Integrated Intel Graphics Media Accelerator 950
Networking	Integrated 10/100/1000 Ethernet
Ports	Serial, parallel, VGA, audio in/out
Operating System	Windows XP Professional, Windows XP Home
USB Ports	8 USB 2.0 (2 front, 6 rear)