Custom Cable Connection 40 Foot DB9 Male to Female RS232 Plenum Extension Serial Cable

SpecPicks Verdict

SpecPicks scored Custom Cable Connection 40 Foot DB9 Male to Female RS232 Plenum… 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 cable, chances are you may need an extension. These cables come in various lengths and are great for creating a new visual display, like hooking up multiple monitors or connecting a laptop to a monitor. All pins are wired straight through.
• BELDEN 6506FE 22 AWG SHIELDED PLENUM CABLE: This plenum cable is fully shielded in order to guard against EMI (electromagnetic interference) or RFI (radio frequency interference). This cable consists of 22 AWG stranded bare copper conductors with Flamarrest insulation, Beldfoil shield and a Flamarrest jacket with ripcord. This 22 AWG cable has been given a CL3 rating, which refers to its in-wall classification and has an outside diameter of .190”
• UL-LISTED, ART 800 PLENUM: Plenum cable is run in the plenum spaces of buildings, which are typically used to wire heating and air conditioning systems. This flexible electrical wiring is Underwriters Laboratories certified and abides by Article 800, which is a rating given by the NEC (National Electrical Code) that refers to building and quality standards relevant to wiring.
• 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

Ready to buy?

Custom Cable Connection 40 Foot DB9 Male to Female RS232 Plenum Extension Serial Cable - 22 AWG with Plenum Black Jacket - Made in the USA 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 — $104.50

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

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