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
Obsidian Series™ 750D Full Tower ATX Case
Upgraded pc case to the corsair obsidian 750d airflow edition & corsair led fans
Fan placement help "Corsaid 750D" - Cooling - Linus Tech Tips
Corsair Obsidian 750D review - Features & specifications
CORSAIR Obsidian Series 750D Performance Full Tower Case (CC-9011035-WW): Computers: Amazon.com.au
Obsidian Series™ 750D Full Tower ATX Case
Optimizing airflow in a Corsair 750D case. : r/PcBuild
Corsair Obsidian 750D Full Tower PC Case LN53701 - CC-9011035-WW | SCAN UK
Corsair Obsidian 750D Case Review
Corsair Obsidian 750D Airflow Black - PC cases Corsair on LDLC | Holy Moley
CORSAIR Obsidian Series 750D Performance Full Tower Case (CC-9011035-WW): Computers: Amazon.com.au