I have been on phone and in live chat with HP support but have not been able to find proper connection for the 5 pin connector cable that connects the power button to the motherboard. This is the motherboard for the ez. Everything on the motherboard should have a label. Where did you come up with the 5 pin cable connector? The cable connects the power button on the top of case to the motherboard.
Build Your Own PC - Step 5: Making Motherboard Connections
How to install a computer motherboard
Computer Assembly - Ready the Monitor. These cables make a connection between the computer case and the computer via the motherboard. It is these cables that allow the power and reset buttons on the front of the case to work, the LEDs one indicating the computer has power, the other indicating the hard drive is being accessed on the front of the case to work, and the built-in speaker to work. The system panel connectors are located on the Gigabyte P55A-UD4P motherboard as shown circled in yellow in the lower-left corner.
How to connect motherboard to power button?
The PC has thrived largely thanks to standards. That interoperability is what enables system builders to assemble systems with a seemingly limitless number of configurations, and it's what fuels an enthusiast's ability to roll their own rig. Motherboards are probably the best place to see standards in action.
Installing a motherboard can be a complex process. This page provides general steps and guidelines for how to install a motherboard. Please refer to the manual and configuration guide that is included with the motherboard for specific details on installation and configuration steps. If replacing an existing motherboard in a computer with a new motherboard, you need to first remove the existing motherboard.