6 Foot DB9 Male to Female RS232 Extension Serial Cable - Plenum

In this review of the 6 foot DB9 Male to Female RS232 extension cable, the bottom line is simple: this cable is for installers and IT pros who need a reliable, code-compliant way to extend RS-232 connections inside buildings. The reviewer found the cable useful when adding or reconfiguring serial devices because it offers a straight-through DB9 male to female connection, a robust 22 AWG fully shielded plenum jacket to reduce EMI, and UL/NEC Article 800 compliance for plenum spaces. If you need a tidy, interference-resistant serial extension made in the USA, this cable is worth considering.

Key Features

• Male to female DB9 connectors: Provides a simple straight-through extension so existing RS-232 cables can be lengthened without rewiring or adapters.
• Extends RS-232 serial connections: Ideal for adding distance between a serial device and host, useful when moving monitors, consoles, or other peripherals.
• 22 AWG shielded conductor: Thicker internal conductors help maintain signal integrity over the 6 ft run for stable serial communication.
• Plenum-rated jacket: The white plenum jacket meets UL Article 800 requirements for safe installation in building plenum spaces.
• Aluminum/polyester shielding: Full shield protects against EMI and RFI, which matters in electrically noisy installations.
• Made in USA quality: Manufactured domestically with a focus on consistent build quality and materials sourced in the United States.

Who It's For

This cable is best for system installers, network technicians, and facilities professionals who must run serial connections through plenum spaces or within buildings where Article 800 compliance is required. It also suits small businesses or labs that rely on RS-232 peripherals and need a dependable extension without changing device wiring.

Casual home users who do not require plenum-rated cabling or who only need very short jumper cables may find this cable more than they need; for simple desktop use under a desk a standard non-plenum DB9 cable can be a lower-cost option.

Pros & Cons

Pros

• Plenum-rated white jacket allows installation in building air spaces where code requires Article 800 wiring.
• Full shielding and 22 AWG conductors reduce interference and help maintain signal integrity for RS-232 links.
• Straight-through wiring with male to female DB9 connectors makes it a drop-in extension for existing serial cables.
• Made in the USA construction provides predictable quality and sourcing.

Cons

• At 6 ft length this cable is fixed; installations needing longer runs will require different lengths or additional extensions.
• Plenum-rated cable can be slightly stiffer and higher cost than basic non-plenum alternatives.

Specifications

Connector Type	DB9 male to DB9 female
Cable Length	6 ft
Conductor Size	22 AWG
Shielding	Aluminum/polyester full shield
Jacket Rating	Plenum, UL Article 800
Color	White
Country of Manufacture	Made in USA

Our Verdict

The 6 ft DB9 male to female RS232 extension is a pragmatic choice for professionals who need a code-compliant, interference-resistant way to extend serial connections. Its combination of 22 AWG conductors, full shielding, and plenum-rated jacket make it good value for installations inside buildings where reliability and compliance matter.

Frequently Asked Questions

Can this cable be used in plenum spaces?
Yes. The cable is plenum-rated and meets UL Article 800 requirements for installation in building plenum spaces.

Is the wiring straight-through or crossed?
All pins are wired straight through, making it a direct extension of an existing DB9 RS-232 cable.

Will the shielding help in noisy environments?
Yes. The aluminum/polyester full shield and 22 AWG conductors reduce EMI/RFI and help preserve signal integrity over the 6 ft length.