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RJ45 Coupler (Male to Male)

CPL-RJ45-MM

Joins two RJ45 cables together, or changes the gender of a connector.

Type: Adapter
Connectors: RJ45

In-depth technical details

Cat5e/Cat6 RJ45 cabling uses one of two equivalent wiring standards, T568A or T568B (they differ only in which pair sits on pins 1-2 vs 3-6) -- performance is identical as long as both ends of the same cable use the same standard.

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Connector anatomy

RJ45 (8P8C)

01 8 gold contacts The eight blades pierce the wire insulation to touch the copper directly — four pairs, two for transmit and two for receive.
02 Locking clip Snaps inside the socket so vibration cannot pull the plug out. A snapped clip is the number-one cause of intermittent network drops.
03 T568A vs T568B Two equivalent wiring standards: T568A puts the green pair on pins 1-2 and orange on 3-6; T568B swaps them. Performance is identical as long as both ends of the same cable use the same standard.
04 Strain-relief boot Stops the wires flexing where they leave the plug — the exact point most cables fail.
05 Outer jacket The outer sheath protecting the conductors inside from abrasion and moisture.

Technical illustration, not a photo of the actual product

From the published standard

How it works

An inline coupler joins two cables of the same type to extend a run, or changes connector gender so two devices with the same plug type can meet. It is purely passive and neither boosts nor cleans the signal, so every extra coupler on a run adds a contact point that can degrade over time — a single cable of the right length is preferable whenever that is practical.

Function: Passive join or gender change — no signal boost
Trade-off: Each coupler adds a contact point that can degrade over time

This information comes from published sources about this type of product, not from the supplier.

en.wikipedia.org

Technical specifications

Type	Adapter
Connectors	RJ45

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