HP 4000n HP LaserJet 4000 Printer Series - HP LaserJet 4000, 4000 T, 4000 N, a - Page 135

DB-9 Serial Cable Pin Outs, Pins not shown are not used by the printer.

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Note DB-9 Serial Cable Pin Outs Computer DB-9 2- Receive Data 3- Transmit Data 4- Data Terminal Ready 5- Ground 6- Data Set Ready 8- Clear to Send Printer DB-9 (male cable end) 2- Transmit Data 3- Receive Data 4- Data Set Ready 5- Ground 6- Data Terminal Ready 8- Data Terminal Ready DB-25 Serial Cable Pin Outs Computer DB-25 3- Receive Data 2- Transmit Data 20- Data Terminal Ready 7- Ground 6- Data Set Ready 5- Clear to Send Printer DB-9 (male cable end) 2- Transmit Data 3- Receive Data 4- Data Set Ready 5- Ground 6- Data Terminal Ready 8- Data Terminal Ready The pin outs for the computer end are typical pin numbers. The actual pin numbers for your computer may be different. Check the documentation for your computer to verify the proper pin outs. Pins not shown are not used by the printer. A-18 Specifications EN

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A-18
Specifications
EN
DB-9 Serial Cable Pin Outs
DB-25 Serial Cable Pin Outs
Note
The pin outs for the computer end are typical pin numbers. The
actual pin numbers for your computer may be different. Check the
documentation for your computer to verify the proper pin outs.
Pins not shown are not used by the printer.
Computer DB-9
Printer DB-9 (male cable end)
2- Receive Data
2- Transmit Data
3- Transmit Data
3- Receive Data
4- Data Terminal Ready
4- Data Set Ready
5- Ground
5- Ground
6- Data Set Ready
6- Data Terminal Ready
8- Clear to Send
8- Data Terminal Ready
Computer DB-25
Printer DB-9 (male cable end)
3- Receive Data
2- Transmit Data
2- Transmit Data
3- Receive Data
20- Data Terminal Ready
4- Data Set Ready
7- Ground
5- Ground
6- Data Set Ready
6- Data Terminal Ready
5- Clear to Send
8- Data Terminal Ready