![](/images/backgrounds/291323/hp-computer-hardware-workstation-users-manual-545740183x1.png)
Serial Interface
Serial Connector | Pin | Signal | |
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| 1 | Carrier Detect | |
| 2 | Receive Data | |
| 3 | Transmit Data | |
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| 4 | Data Terminal | |
| 5 | Ready | |
| 6 | Signal Ground | |
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| Data Set Ready |
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| 7 | Request to Send | |
| 8 | Clear to Send | |
| 9 | Ring Indicator | |
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USB
USB Connector | Pin | Signal |
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|
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| 1 | +5 VDC |
| 2 | - Data |
| 3 | + Data |
| 4 | Ground |
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IEEE 1394
IEEE 1394 Connector | Pin | Signal |
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| 1 | power |
| 2 | gnd |
| 3 | tpb- |
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| 4 | tpb+ |
| 5 | tpa- |
| 6 | tpa+ |
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Connector Pins C
Serial Interface 183