Showing results for 
Search instead for 
Did you mean: 
New member
1 0 0 0
Message 1 of 3
Flag Post

Adding additional fan to OMEN Obelisk desktop

HP Recommended
Microsoft Windows 10 (64-Bit)
Microsoft Windows 10 (64-bit)

Hello everyone,,

Looking to add additonal fan to help cooling and there is an LC_PUMP 4 pin socket (currently unused). Im guessing this stands for Liquid Cooling should I add one for the CPU? But for now can i hook up either a 3 pin or 4 pin 120mm fan to it? The product page states that there is an additional mounting spot on the top of the case for a 120mm fan, but doesn't specifiy where to plug in. The System Fan slot is taken by rear fan and CPU fan slot is taken by current CPU fan, leaving just the one mentioned above. The motherboard is Edoras SSID: 84FD. Thanks In addition I noticed there is a fan spot towards the front of the motherboard, but the actual socket isn't there where you would plug in the fan. You can see where it should go but its missing and the capacitor is missing for it as well.

Level 16
Level 16
24,983 24,634 2,875 10,654
Message 2 of 3
Flag Post
HP Recommended

@Hardus12 , welcome to the forum.


What is the full model or product number of the computer? I need this information to review the specifications of it. Please don't furnish the Serial # or other personal information. Here is a guide to help you find it.

I am not an HP Employee!!

Intelligence is God given. Wisdom is the sum of our mistakes!!
0 Kudos
Level 1
6 4 0 2
Message 3 of 3
Flag Post
HP Recommended

Hey, I had the same question when I was looking to add a fan to mine. you can install one in the top rear of the case. there is a metal fan bracket you have to take off and push out 4 metal squares from it.  When it comes to hooking the fan up, you can use the pump port beside the CPU cooler fan port.


hopefully this is helpful. please keep in mind this worked on my omen obelisk gaming  desktop which has the same motherboard



Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation