10 ft DB9 RS232 Serial Null Modem Cable F/F

Transfer files via serial connection

Product ID: SCNM9FF

3.7 stars (3 reviews) |
  • DB9 Female to DB9 Female
Your price

The SCNM9FF 10ft Cross Wired Serial/Null Modem Cable features two DB9 female connectors, allowing you to connect a serial printer to a 9-pin serial port, or transfer files from PC to PC via serial connection.

Designed to provide a reliable, long-lasting connection, this serial/null modem cable is backed by StarTech.com's lifetime warranty.


  • Connects 9 pin serial port to a serial printer
  • Can be used for PC-PC File transfer

The StarTech.com Advantage

  • Allows you to extend the reach of your printer or PC to PC connection by 10ft, eliminating cable length restrictions
  • Replace worn-out or missing DB9 RS232 cables with this high quality,10ft DB9 RS232 Serial Null Modem Cable F/F
  • Backed by StarTech.com's lifetime warranty

Partner Numbers

  • Ingram Chile 1582513
  • UPC 065030772303


Warranty Information Warranty Lifetime
Connector(s) 1 - Connector A DB-9 (9 pin, D-Sub)
1 - Connector B DB-9 (9 pin, D-Sub)
Hardware Connector Plating Nickel
Packaging Information Package Height 0.0 in [0.1 mm]
Package Length 8.9 in [22.5 cm]
Shipping (Package) Weight 5.3 oz [149.0 g]
Package Width 4.9 in [12.5 cm]
Physical Characteristics Product Height 0.0 in [0.0 mm]
Weight of Product 5.1 oz [143.5 g]
Product Width 0.0 in [0.0 mm]
Color Gray
Connector Style Straight
Cable Length 10.0 ft [3.0 m]
Product Length 10.0 ft [3.0 m]
What's in the Box 1 - Included in Package 10 Ft. 9 Pin Null Modem Cable F/F


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Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(3 reviews)
3.7 out of 5 stars
  • 5 (2)
  • 4 (0)
  • 3 (0)
  • 2 (0)
  • 1 (1)
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1 - 3 of 3 Reviews
(5 Stars)


By: skinnet - 02/17/2015
The cables are just what we needed. They are of good quality. BUT the service is another story. The people that are working are of GREAT quality. What a pleasure doing business with your company. KEEP UP THE GOOD WORK!!!
| Helpful?
(5 Stars)

Super fast delivery

By: webtek - 05/31/2016
Cable is long which helps when the device is in an obscure location. Works great.
| Helpful?
(1 Stars)

not compliant

By: hsieber - 01/06/2020
Not really a compliant null modem cable. CD (pin 1) is wired straight through rather than being tied back to pin 6 (DSR). Does not work with file transfer programs that require handshaking. May work for some but total waste for me. Neither Amazon nor Startech provides any wiring diagrams (that I could readily find), had to manually buzz out.
| Helpful?
Matt, Customer Support on 1/31/2020 2:56:47 PM
We apologize that our SCNM9FF was not suitable for your specific setup. While there are a number of pinouts that can be used for null-modem cables, this cable crosses pins 2-3, 4-6, and 7-8. We are happy to provide a technical diagram with the pinout included if you contact us at www.startech.com/support. Our Technical Advisors are available 24 hours a day, 5 days a week to provide assistance.
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