Compaq dc5850 - Microtower PC Technical Reference Guide

5-10 www.hp.com Technical Reference Guide
Input/Output Interfaces
5.6.2 Pointing Device Interface Operation
The pointing device (typically a mouse) connects to a 6-pin DIN-type connector that is identical
to the keyboard connector both physically and electrically. The operation of the interface (clock
and data signal control) is the same as for the keyboard. The pointing device interface uses the
IRQ12 interrupt.
5.6.3 Keyboard/Pointing Device Interface Connector
The legacy-light model provides separate PS/2 connectors for the keyboard and pointing device.
Both connectors are identical both physically and electrically. Figure 5-6 and Table 5-5 show the
connector and pinout of the keyboard/pointing device interface connectors.
Figure 5-6. PS/2 Keyboard or Pointing Device Interface Connector (as viewed from rear of chassis)
Table 5-5.
Keyboard/Pointing Device Connector Pinout
Pin Signal Description Pin Signal Description
1DATA Data 4+ 5 VDCPower
2 NC Not Connected 5 CLK Clock
3 GND Ground 6 NC Not Connected

Compaq dc5850 - Microtower PC Specifications

General

Memory	Up to 8 GB DDR2 SDRAM
Form Factor	Microtower
Audio	Integrated High Definition audio
Power Supply	300W
Processor	AMD Athlon X2, AMD Athlon, AMD Sempron
Storage	SATA 3.0 Gb/s Hard Drives
Graphics	Integrated ATI Radeon 3100 graphics
Optical Drive	DVD-ROM, DVD+/-RW
Operating System	Windows Vista
Expansion Slots	1 PCI Express x16, 2 PCI Express x1
Network	Integrated Gigabit Ethernet
Ports	1 serial, 1 parallel, 1 VGA, 1 RJ-45, audio in/out