HP Compaq dc7600 MT Technical Reference Guide

5-28 www.hp.com Technical Reference Guide
Input/Output Interfaces
USB Control
The USB is controlled through I/O registers as listed in table 5-21.
5.7.3 USB Connector
These systems provide type-A USB ports as shown in Figure 5-10 below.
Figure 5-10. Universal Serial Bus Connector (Female)
Table 5-21.
USB Control Registers
I/O Address Register Default Value
00, 01h Command 0000h
02, 03h Status 0000h
04, 05h Interupt Enable 0000h
06, 07 Frame Number 0000h
08, 0B Frame List Base Address 0000h
0Ch Start of Frame Modify 40h
10, 11h Port 1 Status/Control 0080h
12, 13h Port 2 Status/Control 0080h
18h Test Data 00h
Table 5-22.
USB Connector Pinout
Pin Signal Description Pin Signal Description
1Vcc +5 VDC 3USB+Data (plus)
2 USB- Data (minus) 4 GND Ground
1 2
3 4

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)