I created this fan mounting system for my HP Envy Phoenix with a 120 mm fan that wouldn't fit well anywhere. I created this to clip on just left of the RAM slots and CPU heatsink. Link to fan I used, https://www.amazon.com/gp/product/B00VRKVGUA/ref=ppx_yo_dt_b_asin_image_o06_s00?ie=UTF8&th=1