HP Deskpro 4000 Technical document

Compaq Deskpro 4000 and 6000 Series of Personal Computers A-1
appendix A
CONNECTOR PIN ASSIGNMENTS
This appendix contains the pin assignments for all external connectors:
Table A-1
Enhanced Keyboard
Connector and Icon (Orange) Pin Signal
KEY
65
43
21
1
2
3
4
5
6
Data
Unused
Ground
+5 VDC
Clock
Unused
Table A-2
Mouse
Connector and Icon (Green) Pin Signal
KEY
65
43
21
1
2
3
4
5
6
Data
Unused
Ground
+5 VDC
Clock
Unused

A-2 Connector Pin Assignments
Table A-3
Parallel Interface
Connector and Icon Pin Signal
22232425
910111213 8 7 6 5
20 19 1821 17 141516
2341 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18-25
Strobe
Data Bit 0
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
Acknowledge
Busy
Paper End
Select
Auto Linefeed
Error
Initialize Printer
Select IN
Signal Ground
Table A-4
Serial Interfaces
Connector and Icon Pin Signal
12345
6789
1
2
3
4
5
6
7
8
9
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator

Compaq Deskpro 4000 and 6000 Series of Personal Computers A-3
Table A-5
Monitor
Connector Pin Signal
78 KEY 10
12345
6
15 14 13 12 11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Red Analog
Green Analog
Blue Analog
Monitor ID Bit2
Ground
Ground Analog
Ground Analog
Ground Analog
Not Connected
Ground
Monitor ID Bit 0
Bi-directional Data (SDA)*
Horizontal Sync
Vertical Sync
Data Clock (SCL)*
* For DDC support (I2C monitors)
Table A-6
Ethernet RJ-45
Connector and Icon Pin Signal
1
2
3
4
5
6
7
8
(+) Transmit Data
(-) Transmit Data
(+) Receive Data
Unused
Unused
(-) Receive Data
Unused
Unused

A-4 Connector Pin Assignments
Table A-7
Ultra SCSI
Connector and Icon Pin Signal
1-11
12
13
14
15-25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Ground
Reserved
Open
Reserved
Ground
DBO
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DBP
Ground
Ground
Reserved
TERMPWR
Reserved
Ground
ATN #
Ground
BSY #
ACK #
RST #
MSG #
SEL #
C/D
REQ #
Input/Output

Compaq Deskpro 4000 and 6000 Series of Personal Computers A-5
Table A-8
Line-Out Audio Connector
Connector and Icon
1/8-inch Miniphone
Table A-9
Line-In Audio Connector
Connector and Icon
1/8-inch Miniphone
Table A-10
Microphone Connector
Connector and Icon (Blue)
Stereo 1/8-inch Miniphone
Table A-11
Headphone Connector
Connector and Icon
Stereo 1/8-inch Miniphone

A-6 Connector Pin Assignments
Table A-12
USB Connector
Connector and Icon Pin Signal
1234
1
2
3
4
VCC
- Data
+ Data
Ground

Compaq Deskpro 4000 and 6000 Series of Personal Computers A-7
Table A-13
External Infrared Transceiver
Connector and Icon Pin Signal
KEY
65
43
21
1
2
3
4
5
6
7
8
Transmit
Receive
Ground
5V
Mode
Not Used
Not Used
Not used
Table A-14
Ethernet AUI
Connector and Icon Pin Signal
7
13 12 11 10
8
9
5643
15 14
12 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Ground
(+) Collision Detect
(+) Transmit Data
Ground
(+) Receive Data
Ground
Not Used
Ground
(-) Collision Detect
(-) Transmit Data
Ground
(-) Receive Data
+12V Supply
Ground
Not Used

Compaq Deskpro 4000 and 6000 Series of Personal Computers B
B-1
appendix B
POWER CORD SET
REQUIREMENTS
The voltage select switch feature on the computer permits it to operate from any line voltage between
100-120 or 200-240 volts AC.
The power cord set received with the computer meets the requirements for use in the country where
you purchased the equipment.
Power cord sets for use in other countries must meet the requirements of the country where you use
the computer. For more information on power cord set requirements, contact your authorized
Compaq dealer, reseller or service provider.
General Requirements
The requirements listed below are applicable to all countries:
1. The length of the power cord set must be at least 6.00 feet (1.8 m) and a maximum of 9.75 feet
(3.0 m).
2. All power cord sets must be approved by an acceptable accredited agency responsible for
evaluation in the country where the power cord set will be used.
3. The power cord set must have a minimum current capacity of 10A and a nominal voltage rating
of 125 or 250 volts AC, as required by each country’s power system.
4. The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320
Standard Sheet C13 connector, for mating with appliance inlet on the Switch Box.

B-2
Power Cord Set Requirements
Country-Specific Requirements
Power Cord Set Requirements–By Country
Country Accrediting Agency Applicable Note Numbers
Australia EANSW 1
Austria OVE 1
Belgium CEBC 1
Canada CSA 2
Denmark DEMKO 1
Finland SETI 1
France UTE 1
Germany VDE 1
Italy IMQ 1
Japan JIS 3
Norway NEMKO 1
Sweden SEMKO 1
Switzerland SEV 1
United Kingdom BSI 1
United States UL 2
NOTES:
1. The flexible cord must be <HAR> Type HO5VV-F, 3-conductor, 1.0 mm2 conductor size. Power
cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency
responsible for evaluation in the country where it will be used.
2. The flexible cord must be Type SJT or equivalent, No. 18 AWG, 3-conductor. The wall plug
must be a two-pole grounding type with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A
250V) configuration.
3. The appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration number
in accordance with the Japanese Dentori Law. The flexible cord must be Type VCT or VCTF,
3-conductor, 0.75 mm2 conductor size. The wall plug must be a two-pole grounding type with a
Japanese Industrial Standard C8303 (15A, 125V) configuration.

Compaq Deskpro 4000 and 6000 Series of Personal Computers C-1
appendix C
HARD DRIVES
Compaq Computer Corporation uses IDE hard disk drives that conform to two different
primary/secondary implementations. These are Conner mode and ATA-compatible mode. These two
modes are incompatible with one another.
If installing a second Ultra ATA hard drive on the primary controller, you must use an 80-conductor
ATA cable for optimal performance.
Device 0/Device 1 Relationship
A device 0/device 1 relationship exists when there are two hard drives connected to a single port. In
this situation, one drive must be designated as the device 0, or primary drive and the other as the
device 1, or secondary drive. This designation is necessary because both drives cannot work
simultaneously.
Cable Select
The Compaq Deskpro 4000 Series of Personal Computers use cable-select technology for identifying
Device 0 (primary) and Device 1 (secondary) IDE hard drives. Check that the jumpers on the IDE
hard drives are set properly for cable-select installation. Always check the label on the drives or
check Chapter 7 of this manual when a new drive is added to verify that the jumper settings are set
correctly.
 Cable select may not function properly if drives other than those supported by Compaq are
installed.
 The second drive on a cable-select cable can be a CD-ROM drive. However, the CD-ROM drive
must be installed in the device 1 position if a hard drive is installed on the same cable. Ensure
that both drives are set for cable-select configuration. See Chapter 7 for more information.
 If two drives are already connected to the primary IDE controller and an additional drive is to be
installed, the secondary IDE controller must be enabled. The secondary IDE controller can be
enabled by checking this option after opening the Advanced box in the Mass Storage group of
F10 Computer Setup. See Chapter 8 for more information.
 When more than two drives are installed, drive performances are best when the two faster drives
are connected to the primary IDE controller and the slower drive is connected to the secondary
IDE controller.