Network Cable Crystal Head To COM Nine-pin Router Configuration Line

Product information:

Wire material: copper
Weight: 100g

Features:

Length: 1.5M
Interface: RS232 (serial port), COM (network cable port)
Material: Copper 28AWG wire gauge 8C flat network cable,
Color: sky blue
OD: 2.3*8.1MM

【Product Usage】:
One end is RJ45 crystal net mouthpiece, the other end is 9-pin female connector, which is used to connect IT machines and PC equipment.

Cisco console configuration line, RJ45-serial port, no need to turn heads. General Cisco network equipment has a CONSOLE interface, which is used to set up the equipment or operate at a lower level.

RS-232 serial port to RJ45 crystal head line
Interface: RS-232 9 (female) to RJ45 (male)
Flat line, blue.

This is the control line of routers and switches produced for Cisco. It can be used not only on Cisco equipment, but also on routers and switches of other brands, because many of the machines of other brands have the same structural principles as Cisco, so, generally In other words, if you want to buy one side with 9 holes (232 ports) and the other side with rj45 (network cable port), this line is universal!

Packing list:

Crystal head to serial line*1

Network Cable Crystal Head to COM 9-Pin Router Configuration Cable

Simple Serial Configuration for Routers, Switches, and Network Devices
This Network Cable Crystal Head to COM Nine-Pin Router Configuration Line is designed for technicians, IT staff, and advanced home users who need a reliable way to access and configure network equipment via a serial console. On one end is an RJ45 “crystal head” connector commonly found on network devices, and on the other is a standard 9-pin COM (DB9) serial plug for connecting to compatible PCs, laptops, or serial adapters. It’s ideal for setting up routers, switches, firewalls, and other console-managed devices in server rooms, offices, labs, and home networks.

Stable Console Access for Professional Network Maintenance
When you need to perform initial setup, firmware updates, or troubleshooting on your router or switch, this configuration line provides a direct, stable link to the console port. Unlike web or app-based tools that depend on the device already being on the network, a COM-to-RJ45 console cable lets you access low-level settings even when the device is misconfigured or offline. This is essential for recovering from errors, resetting configurations, or performing first-time installations in new environments.

The cable wiring is arranged for console communication, helping ensure that data and control signals are transmitted correctly between your computer’s serial interface and the router’s management port. For many IT workflows, this is a must-have tool in the toolkit, especially when working with enterprise-style gear.

Durable Connectors with Flexible, Easy-to-Route Cable
Featuring a clear RJ45 crystal head and a sturdy nine-pin DB9 connector, this configuration cable is built for frequent plugging and unplugging. The connectors are moulded for strain relief, helping prevent damage where the cable meets the plug, which is a common weak point in cheaper leads. The flexible cable body makes it easy to route around racks, desks, and equipment without tangling, so you can keep your workspace tidy even in tight wiring closets.

Its compact size also makes it convenient to carry in a laptop bag or tool pouch, so you always have a console line ready when visiting client sites or moving between different server rooms.

Why Choose a Network Cable Crystal Head to COM 9-Pin Configuration Line
This type of cable is an essential accessory for anyone managing professional or semi-professional network equipment. It provides direct, dependable console access for configuration and recovery, avoids the limitations of web-based setups, and works with a wide range of routers and switches that use RJ45 serial ports. For network engineers, technicians, and serious home lab users, it’s a simple, robust solution that makes router configuration and troubleshooting faster, safer, and more reliable.