> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/server-and-os-administration/hardware-power-supply.md).

# Hardware:Power Supply

This page explains how to provide high availability for the power source of your system.

### Dual power Connector

The following Tmedia units can be purchased with dual power connector:

* [TMP6400](https://telcobridges.com/products/development-platforms-tdev/tmp6400-tdev-voip-gateway-development-platform/) (2 U box)
* [TMG7800](https://telcobridges.com/media-gateways/products/tmedia-gateways/tmg7800/) series

The dual power supply allows the unit to keep running even if the one of them fails.

It is also important to mention that the dual power supplies are [hot-swappable](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/operations/hot-swap/README.md). This means that you can replace a defective power supply without shutting down the system.

### Dual Power Source

TelcoBridges recommends to connect the [Tdev](https://telcobridges.com/products/development-platforms-tdev/) system to 2 independent power sources.

Each rack has 2 power entry, which will distribute the 2 independent power sources throughout the whole system.

### Other System Devices

As for other devices included in your system like servers, Ethernet switches, etc. It is recommended to get redundant power supplies for them as well, to increase the reliability of the system.

### Recommended Setup

The following schematic shows the recommended power connections for a high availability system:

![Ha Power Distribution](https://docs.telcobridges.com/w/images/f/fc/Ha_Power_Distribution.png)


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