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USB-C to RJ45 Console Cable

CON-USB-C-RJ45

Management cable that connects a laptop to the console port on a switch or router. FT232R+ZT213 chipset.

Type: Adapter
Length: 1.8 m
Connectors: USB-C / RJ45

In-depth technical details

USB-C has 24 pins, and its real distinguishing feature is symmetry: 4 VBUS + 4 GND pins (for reversibility and higher current), 2 CC pins (only one active at a time -- the actual mechanism behind plugging in either way, and how Power Delivery negotiation happens), plus SuperSpeed differential pairs that can carry USB 3.x data or, in Alt Mode, DisplayPort video. 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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End A

USB Type-C

01 24 pins, reversible The pins are laid out with rotational symmetry, so either way up gives the same connection. That is why there is no wrong way round.
02 CC negotiation lines The two ends use these to agree voltage and current before any power flows — what makes 100 W charging safe.
03 Oval shell The rounded oval spreads insertion stress and survives being plugged in far more times than older shapes.
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

End B

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

How it works

USB cable construction

The data pair is twisted and works differentially, like network cable. The power wires are thicker because they carry current, and their thickness is what really decides whether a cable charges fast.

01 Power wires 5 V by default, and USB PD negotiates it up to 20 V to reach higher wattages. Thicker copper means less voltage drop over the run.
02 Twisted data pair D+ and D−: the same signal inverted, so noise cancels at the receiver.
03 Shield A grounded conductive wrap that absorbs electromagnetic interference before it reaches the signal.
04 Outer jacket Protects everything inside mechanically. It plays no electrical role.

Technical illustration, not a photo of the actual product

From the published standard

How it works

A console cable connects a computer to the management port of a switch or router. The connector is RJ45 but the signal is not networking: it is a serial port with a manufacturer-specific pinout. This is the port used when a device is brand new with no configuration, or when network access has been lost, which is why it stays necessary despite being old technology.

Connector vs signal: RJ45 shell, serial signalling — not Ethernet
Used for: First configuration, and recovery when network access is lost
Pinout: Manufacturer-specific; a network patch lead will not work

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

en.wikipedia.org

Applications

First-time configuration of a switch or router
Recovering a device that lost its settings

Technical specifications

Type	Adapter
Length	1.8 m
Connectors	USB-C / RJ45

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