Compatible Motherboard

[Ez33]

What is a specific motherboard that will be compatible with the Omen Obelisk and the power connectors, I know it has to be a micro-ATX.

[Grzwacz]

Greetings,

Welcome back to the forum.

I am not a HP employee.

You are correct; you need a uATX motherboard.

Here's the problem.

HP may use modified front panel USB connections or RGB connections that don't work with retail motherboards from vendors such as Asus or Gigabyte. The power switch and power or HDD LEDs may not work.

It is not recommended to install retail MBs in HP PCs. Sometimes this works and sometimes this modification  does not work.

There may be other issues with chassis standoffs and how the rear I/O shield in installed.

Only someone doing this change can verify if this will work with your specific HP PC. Obelisk 875 can be many HP PCs. But the chassis is the same for all HP 875 PCs.

Regards