DC power cable with 5.5×2.1 mm plug is a connecting cable for supplying constant voltage to various electronic devices. The standard DC 5.5×2.1 mm connector is widely used in routers, monitors, LED equipment, backup power systems, video surveillance and other electronics.
The cable has a length of from 1 meter and is suitable for connecting equipment with a corresponding power socket. Before use, it is necessary to check not only the size of the plug, but also the operating voltage, polarity and permissible current of the connected device.
🔌 DC power plug 5.5×2.1 mm
The cable is equipped with a common cylindrical connector 5.5×2.1 mm, where 5.5 mm is the outer diameter of the plug, and 2.1 mm is the inner. This type of connector is also often referred to as DC 5.5×2.1 mm or 5.5/2.1 mm.
A cable with a 5.5*2.1 mm plug can be used to connect compatible power supplies, battery systems, and other equipment equipped with a corresponding DC connector.
⚡ For powering electronic equipment
A 5.5×2.1 mm power cable will come in handy when repairing equipment, replacing a damaged power supply cable, making your own power systems, or connecting electronic devices to a suitable DC voltage source.
A connector of this size is found in many routers, modems, monitors, LED controllers, LED strips, video surveillance cameras, and uninterruptible power supply systems.
📋 Technical specifications
| Type | DC Power Cable |
| Connector Type | Cylindrical DC Plug |
| Plug Size | 5.5 × 2.1 mm |
| Outer Diameter | 5.5 mm |
| Inner Diameter | 2.1 mm |
| Cable length | From 1 m |
| Purpose | Connecting power to compatible electronic devices |
🛠️ Where is the 5.5×2.1 mm cable used
Due to the common size DC 5.5/2.1 mm, the cable can be used in various low-voltage systems and electronic equipment, provided that the electrical parameters match.
- routers and modems;
- monitors and small displays;
- LED strips and LED equipment;
- lighting controllers;
- cameras and systems video surveillance;
- backup and uninterruptible power supply systems;
- electronic modules and controllers;
- DIY projects and electronics repair.
✔ Convenient option for repair and homemade devices
Power cord with DC 5.5×2.1 mm plug is convenient to use when you need to connect a power source yourself or replace a damaged cable. The presence of an already installed plug simplifies installation and allows you to use the cable in various electronic projects.
It is important not to confuse the 5.5×2.1 mm standard size with the similar 5.5×2.5 mm connector. The outer diameter is the same, but the inner diameter is different, so it is recommended to check the size of your device's jack before ordering.
⚠️ Please note
The size of the DC 5.5/2.1 mm plug itself does not determine the voltage or polarity of the power supply. Before connecting, be sure to check the source voltage, the required polarity and the device parameters. Incorrect voltage or polarity can damage the equipment.
DC 5.5×2.1 mm power cable is a practical solution for connecting, repairing and manufacturing power cables for compatible electronics. The cable length is from 1 meter, and the common 5.5×2.1 mm plug is suitable for many types of low-voltage equipment.
You can buy a power cable with a 5.5×2.1 mm plug at the indicated price in the WST store.