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DB9 Null Modem - D-Sub Adapters & Gender Changers

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Null modems are used to connect two computers or other devices together to achieve file transfer.
Null modem connectors are different from regular DB9 connectors because the receive and transmit conductors are crossed.

Common Questions & Answers

1 Other D-Sub Connectors and Adapters? - D-Sub Connector and Adapter Menu

2 Mounting Gender Changers? - Mounting Gender Changers - D-Sub Mounting

3 Mounting Hole size explanation? - Why the mounting hole sizes are noted - Hole Specs

4 DB9 Null Modem Adapters and Gender Changers In Stock? - DB9 Null Modem Adapters and Gender Changers are generally in stock and ready to ship, but inventory does change daily. Feel free to contact us to confirm your immediate needs.

Review this chart to confirm your needs
Gender Changer Identification Chart

DB9 Null Modem Adapters and Gender Changers

Important Mounting Hardware Note!

To mount the DB9 Null Modem Gender Changers you need Jack Screws and Hex Nuts.
Female to Female Gender Changers come with stock Jack Screws and Hex Nuts.
All other Gender Changers come only with stock Jack Screws - you will need Hex Nuts.
If panel mounting you will need special Jack Screws and Hex Nuts.

D-Sub Mounting Hardware and Information

DB9 Null Modem Female to
DB9 Null Modem Female

DB9 Null Modem Female to Female

Stock Number: 3521120

1-49 $2.59 ea.
50+ $2.46 ea.
100+ $2.33 ea.

Enter Quantity

Mounting Hole - DB9
Weight - .03
D Code-1

DB9 Null Modem Female to
DB9 Null Modem Male

DB9 Null Modem Female to Male

Stock Number: 3521125

1-49 $2.59 ea.
50+ $2.46 ea.
100+ $2.33 ea.

Enter Quantity

Mounting Hole - DB9
Weight - .03
D Code-1

DB9 Null Modem Male to
DB9 Null Modem Male

DB9 Null Modem Male to Male

Stock Number: 3522115

1-49 $2.59 ea.
50+ $2.46 ea.
100+ $2.33 ea.

Enter Quantity

Mounting Hole - DB9
Weight - .03
D Code-1

DB9 Null Modem Male to
DB9 Null Modem Female

DB9 Null Modem Male to DB9 Null Modem Female

Stock Number: 3521125

1-49 $2.59 ea.
50+ $2.46 ea.
100+ $2.33 ea.

Enter Quantity

Mounting Hole - DB9
Weight - .03
D Code-1

DB9 Dustcaps

DB9 Female Dustcaps

DB9 Dust Cap

Stock Number: AC-DC-DB9F

1-99 $.35 ea.
100+ $.29 ea.

Enter Quantity

Weight - .01
D Code-1

DB9 Male Dustcaps

DB9 Dust Cap

Stock Number: AC-DC-DB9M

1-99 $.35 ea.
100+ $.29 ea.

Enter Quantity

Weight - .01
D Code-1


accepted payments

VADCON, Inc.
PO Box 92414
Rochester, NY 14692
Phone: 800-899-9855
Fax: 888-411-0343

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