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25 Foot DB9 Male to Female RS232 Extension Serial Cable - 28 AWG Shielded
Custom Cable Connection

25 Foot DB9 Male to Female RS232 Extension Serial Cable - 28 AWG Shielded

Bottom line: The 25 Foot DB9 Male to Female RS232 Extension Serial Cable ($16.45 on Amazon as of 2026-10-06): DB9 male-to-female extends existing RS-232 runs without replacing your cables; main trade-off: straight-through wiring won't work where a null-modem crossover is required.

$16.45

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Buy on Amazon — $16.45 Compare to similar cables & connectors

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ DB9 male-to-female extends existing RS-232 runs without replacing your cables
  • ✓ Full 25 ft reach for distant serial peripherals and cubicle layouts
  • ✓ 28 AWG fully shielded against EMI and RFI interference
  • ✓ Thumbscrew molded connectors lock in for easy connect and disconnect

Cons

  • ✗ Straight-through wiring won't work where a null-modem crossover is required
  • ✗ DB9 serial only; useless on devices lacking an RS-232 port
  • ✗ Beige jacket is bulky and hard to hide in a modern desk setup
  • ✗ 25 ft length is fixed; shorter runs leave excess cable to manage

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SpecPicks Verdict

SpecPicks scored 25 Foot DB9 Male to Female RS232 Extension Serial Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the cables & connectors category. Custom Cable Connection's cables & connectors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for cables & connectors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • MALE TO FEMALE DB9 CONNECTORS: With DB9 extension cables, you will no longer sacrifice convenience when it comes to the placement of computer peripherals in your work area. This cable will give you the flexibility you need to set up extra screens in whatever space you have available. Our DB9 extension cables can extend your existing connections or replace the cables that restrict you.
  • EXTEND RS-232 SERIAL CABLES: If you already have existing RS-232 cables, chances are you may need an extension. This DB9 connector has a beige jacket that follows safety standards and will protect the cable itself from damage. All pins are wired straight through the electrical cable and the fully-molded design provides excellent strain relief.
  • EASY THUMBSCREW CONNECTION: This cable’s fully molded connectors with thumbscrews provide you with a quick and easy connection every time. Simply loosen screws to disconnect, then attach and tighten securely to connect. This tangle-free cord is a necessary accessory to have on hand for your home office or cubicle.
  • 28 AWG SHIELDED CABLE: This cable is fully shielded in order to guard against EMI (electromagnetic interference) or RFI (radio frequency interference). These cables are great for creating a new visual display, like hooking up multiple monitors or connecting a laptop to a monitor. These cables come in various lengths, including 6’, 10’ 15’, 25’, 50’, and 100’.
  • CUSTOM CABLE CONNECTION QUALITY: Here at Custom Cable Connection, we are family owned and have been in business since 2002. We have made it our mission to provide high-quality audio, video, network, and RF cable assemblies as well as OEM products for our loyal customers. We manufacture in-house as often as possible with US-sourced products.

Full Specifications

BrandCustom Cable Connection
ColorBeige
Gauge22.0
Model33041-25
Cable TypeHDMI
Item ShapeRound
Model Name4101204/10
Unit Count25.0 Feet
Item Length25 Feet
Part Number33041-25
Connector TypeDB9
Number of Pins9
Outer MaterialPolyvinyl Chloride (PVC)
Connection TypeWired
Number of Items1
Special FeatureTangle Free
Connector GenderMale-to-Female
Specification MetUL
Compatible DevicesMonitor, PC, Printer, Router
Included Components25 ft

Ready to buy?

25 Foot DB9 Male to Female RS232 Extension Serial Cable - 28 AWG Shielded is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $16.45

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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25 Foot DB9 Male to Female RS232 Extension Serial Cable - 28 AWG Shielded
$16.45
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