For those using Corsair 750D cases, here's a quick mod to improve cooling for lower-left most drive cage. I was having thermal issues during summer time parity checks and this solved it. :
Review - Corsair Obsidian 750D Full Tower Case
Upgraded pc case to the corsair obsidian 750d airflow edition & corsair led fans
CORSAIR Obsidian Series 750D Performance Full Tower Case (CC-9011035-WW): Computers: Amazon.com.au
Obsidian Series™ 750D Full Tower ATX Case
Corsair Obsidian 750D Full Tower PC Case LN53701 - CC-9011035-WW | SCAN UK
FAN SETUP ON CORSAIR 750D - Cooling - Linus Tech Tips
Corsair's Obsidian 750D full tower case is on sale for $120 | PC Gamer
Corsair Announces Obsidian Series 750D Airflow Edition Full-Tower PC Case | Play3r
Corsair Obsidian Series 750D Full-tower PC Case - HardwareZone.com.sg
Optimizing airflow in a Corsair 750D case. : r/PcBuild