Product Details

Technical Reference Guide For the
NA = Not applicable
[1] Shift (left) key active.
[2] Ctrl key active.
[3] Alt key active.
[4] Left Shift key active. For active right Shift key, substitute AA/2A make/break codes for B6/36
codes.
[5] Left Shift key active. For active right Shift key, substitute F0 12/12 make/break codes
for F0 59/59 codes.
[6] Num Lock key active.
[7] Windows keyboards only.
[8] 7-Button Easy Access keyboard.
[9] 8-Button Easy Access keyboard.
Compaq Personal Computers C-15
Changed - July 2000
Appendix C Keyboard
C.3 CONNECTORS
Two types of keyboard interfaces are used in Compaq systems: PS/2-type and USB-type. System
units that provide a PS/2 connector will ship with a PS/2-type keyboard but may also support
simultaneous connection of a USB keyboard. Systems that do not provide a PS/2 interface will
ship with a USB keyboard. For a detailed description of the PS/2 and USB interfaces refer to
chapter 5 "Input/Output" of this guide. The keyboard cable connectors and their pinouts are
described in the following figures:
Pin Function
1 Data
5 6
2 Not connected
3 Ground 3 4
4 +5 VDC
1 2
5 Clock
6 Not connected
Figure C9. PS/2 Keyboard Cable Connector (Male)
Pin Function
1 +5 VDC
2 Data (+) 4 3 2 1
3 Data (-)
4 Ground
Figure C10. USB Keyboard Cable Connector (Male)
C-16 Compaq Personal Computers
Changed - July 2000
INDEX
I.
Universal Serial Bus interface, 5-25
abbreviations, 1-4
cooling, 4-25
AC97 link bus, 5-28
core voltage, 3-2, 3-3
ACPI, 5-34
Desktop Management, 8-3
acronyms, 1-4
device ID (PCI), 4-4
AOL requirements, 5-33
DIMM, 3-5
APIC, 4-8
DIMM detection, 8-11
APM, 5-34
DIMM support, 8-5
APM BIOS functions, 8-17
diskette drive, 5-5
APM BIOS support, 8-15
diskette drive interface, 5-5
ASCII character set, B-1
display modes, 815E-based, 6-4
audio, 5-26
DMA, 4-10
audio controller (AC97), 5-28
DMI, 8-13
audio subsystem, 2-19
drive fault prediction, 8-5, 8-6
battery replacement, 4-11
DriveLock, 4-23
BIOS upgrading, 8-18
East Access keys, C-10
BIOS, ROM, 8-1, 8-2
Easy Access keyboards, C-7
boot status, 4-24
EIDE interface, 5-1
cable lock, 4-23
Enhanced Parallel Port (EPP), 5-9
CAS latency, 3-5
events, wake up, 7-3
Celeron processor, 2-14, 2-15, 3-2
Extended Capabilities Port (ECP), 5-10
chipset, 2-16
fault prediction, drive, 8-6
clock generation, 4-11
features, standard, 2-2
CMOS, 4-11
flash status, 4-24
CMOS, archive, 4-12
FlexATX, 2-8
CMOS, clearing, 4-12
general purpose I/O, 4-27
CMOS, restoring, 4-12
GPIO, 4-27
codec, audio, 5-29
I/O controller, 4-29, 4-30
Configuration Cycle, 4-4
graphics subsystem, 2-18, 6-1
configuration cycle (PCI), 4-4
graphics, 815E-based, 6-2
configuration memory, 4-11
Hard drive activity indicator, 4-30
configuration space (PCI), 4-5
heat sink (processor), 2-15
Connector
I/O controller (LPC47B34x), 4-28
Audio, CD, 5-27
I/O map, 4-26, 8-9
audio, headphones out, 5-26
IDE interface, 5-1
audio, line in, 5-26
IDE interface, secondary, 5-4
audio, line out, 5-26
IDSEL, 4-4
Audio, Mic In, 5-26
index addressing, 1-3
Audio, Speaker, 5-27
interface
display (VGA monitor), 6-6
audio, 2-19, 5-26
IDE interface, 5-3
diskette drive, 5-5
keyboard/pointing device interface, 5-21
IDE, 5-1
Multibay, 5-4
keyboard/pointing device, 5-15
Network RJ-45, 5-36
parallel, 2-18, 5-9
parallel interface, 5-14
serial, 2-18, 5-6
serial interface (RS-232), 5-6, 5-7
ACPI, 4-23
USB, 2-18, 5-22
network interface controller (NIC), 5-34
interrupts
power management BIOS function, 8-14
maskable (IRQn), 4-7
power states, system, 8-14
nonmaskable (NMI, SMI), 4-9
power supply, 7-1
key (keyboard) functions, C-8
power supply assembly, 7-2
keyboard, C-1
PPGA370, 3-2
keyboard (micro)processor, C-2
processor
keyboard layouts, C-5
Celeron, 2-14, 3-2
keyboard, USB, C-4
Pentium III, 2-14, 3-3
keyboard/pointing device interface, 5-15
processor upgrading, 2-15
keyboards, Easy Access, C-7
processor, Celeron, 2-15, 3-2
keys, Easy Access, C-10
processor, Pentium II, 2-15
keys, Windows, C-9
programming 815E-based graphics, 6-5
LED indications (status), 4-24, 4-30
RAM, 2-17
LED, HD, 4-30
reference sources, 1-2
LED, Power, 4-30
remote wake up, 5-34
low voltages, 7-6
restoring CMOS, 4-12
LPC47B34x I/O controller, 4-28
ROM BIOS, 8-1, 8-2
Magic Packet, 5-34
RS-232, 5-6, 5-7
mass storage, 2-18
RTC, 4-11
media write protect function (BIOS), 8-10
scan codes (keyboard), C-11
memory detection, 8-11
SDRAM, 3-5
memory map, 3-7
security functions, 4-22
memory, system, 3-5
security functions (BIOS), 8-10
memory, system (RAM), 2-17
security, interface, 4-23
MMX, 3-2
sensor, thermal, 4-25
monitor power control, 6-5
serial interface, 2-18, 5-6
motherboard, 2-8
signal distribution, 7-7
mouse interface, 5-17
SIMD, 3-2, 3-3
Multibay, 5-4
SMBIOS, 8-13
MultiBay, 2-18
SMI, 4-9
network interface controller (NIC), 5-33
specifications
network support, 5-32
electrical, 2-20
notational conventions, 1-2, 1-3
environmental, 2-19
NUM lock, 3-5
power supply, 7-7, 7-8
operational status indications (LED), 4-24
Specifications
options, 2-3
24x CD-ROM Drive, 2-20, 2-21
parallel interface, 2-18, 5-9
Audio subsystem, 5-31
password, clearing, 4-12
Hard Drive, 2-22
password, DriveLock, 4-23
specifications, system, 2-19
password, power-on, 4-22
SSE, 3-3
password, setup, 4-22
status, system (LED), 4-24, 4-30
PCI bus, 4-2
system board, 2-8, 2-9
PCI Configuration Space, 4-5
system ID, 8-4
Pentium II, 2-16
system memory, 2-17, 3-5
Pentium II processor, 2-15
system resources, 4-7
Pentium III processor, 2-14, 3-3
system ROM, 8-1, 8-2
pinouts, header (connector), 7-9
system status indications, 4-24, 4-30
Plug 'n Play, 2-2, 2-18, 8-12
thermal sensing, 4-25
Plug 'n Play BIOS function, 8-12
typematic, C-8
power button, 7-3
UART, 5-6
Power Button Override, 4-12
Universal Serial Bus (USB) interface, 5-22
power distribution, 7-4
upggrading BIOS, 8-18
Power indicator, 4-30
upgrading, processor, 2-15, 3-4
power management
wake up events, 7-3
USB interface, 5-22
wake up, remote, 5-34
USB keyboard, C-4
Windows keys, C-9
USB legacy support, 8-17
WOL, 7-3
USB ports, 2-18
ZIF socket, 2-14
vender ID (PCI), 4-4
voltage, core, 3-2, 3-3
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161685-B21
7M-0300B-WW
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