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Maintenance and Service Guide Compaq Presario 4900, 5000, & 5100 Series Computers
Home | Product Description | Troubleshooting | Illustrated Parts Catalog
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Models and features
CPU controls and lights
Keyboard controls and lights
Creativity Action Center
CPU rear connectors
Power cord set requirements
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| PRODUCT DESCRIPTION CPU Rear Connectors ### Connector Pin Assignments Click on an item to see its pin assignments.
Audio line out | Flat panel monitor | Mouse | Serial
Audio line in | Keyboard | Parallel | Speaker/headphone out
CD drive data cable | Microphone | Phone line to phone | USB
Fax/modem | MIDI/joystick | Phone line to wall jack | VGA monitor
Flat-panel monitor
Pin | Signal | Pin | Signal | Pin | Signal | Pin | Signal
1 | TX2+ | 6 | TXC+ | 11 | TX2- | 16 | TXC-
2 | Ground | 7 | Logic ground | 12 | Ground | 17 | +5VDC
3 | TX1+ | 8 | DDC data (SDA) | 13 | TX1- | 18 | DDC Clock (SCL)
4 | TX0+ | 9 | Reserved | 14 | TX0- | 19 | Reserved
5 | Ground | 10 | Reserved | 15 | Ground | 20 | Reserved
MIDI/Joystick
Pin | Signal | Pin | Signal | Pin | Signal
1 | +5 VDC | 6 | Y-Axis (1) | 11 | X-Axis (2)
2 | Fire A (1) | 7 | Fire B (1) | 12 | MIDI Out
3 | X-Axis (1) | 8 | +5 VDC | 13 | Y-Axis (2)
4 | Ground | 9 | +5 VDC | 14 | Fire B (2)
5 | Ground | 10 | Fire A (2) | 15 | MIDI In
Line out Line in Speaker/Headphone Out Microphone
| Stereo 1/8" Miniphone
Phone Line to Wall Jack Phone Line to Phone
| Pin | Signal
1 | Unused
2 | Tip
3 | Ring
4 | Unused
Internal Fax/Modem
Pin | Signal | Pin | Signal | Pin | Signal
1 | Unused | 3 | Ring | 5 | Unused
2 | Unused | 4 | Tip | 6 | Unused
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