# Step 4: Connect the power source and verify power to your Outposts server
<a name="install-power"></a>

To complete power up, you attach the NSK, connect the server to a power source, and verify that the server has powered on. Consider the following information about powering the server:
+ The server functions with one power source, but AWS recommends you use two power sources for redundancy.
+ Connect the power cables before you connect the network cables.
+ Use the pair of C13 outlet/C14 inlet power cables to connect the server to a power supply on the rack. If you're not using the C14 inlet power cable to connect the server to a power supply on the rack, you must provide adapters for the C14 inlets that connect to a power source.

**Topics**
+ [Attach NSK](power-attach-nsk.md)
+ [Power on](power-on.md)
+ [Check the NSK Power LED](power-check-led.md)