The PS5 can be set up either horizontally or vertically using the included base, which converts by rotating the arm clockwise or counterclockwise.
PS5 cooling performance won't be affected by vertical or horizontal positioning
PS5 Stand positions - How to attach the stand vertically or horizontally and find the screw for the PlayStation 5 explained
PS5 Stand and Cooling Station Horizontal with cooling fan for PS5 Console, PS5 Accessories Vertical Stand with Cooling System, Horizontal Cooler Stand for Playstation 5 Digital/Disc Edition Console : Video Games
【Protect Your PS5】This stand allows you to place your PS5 console in a horizontal position while still protecting the bottom panel from being
NexiGo PS5 Accessories Horizontal Stand, [Minimalist Design], PS5 Base Stand, Compatible with Playstation 5 Disc & Digital Editions, Black
Sony's PS5 design flaw could be slowly killing your console
PS5 stand explained: vertical vs. horizontal orientations, side panels - Polygon
Why does my PS5 keep turning off randomly? It's been happening for nearly a year since it started and I've tried everything. - Quora
Sony PlayStation 5: Keeping the Gaming Console Standing Upright Can Be Disastrous to Its Long-Term Health
PS5 stand explained: vertical vs. horizontal orientations, side panels - Polygon
PS5 How to Attach Stand (Horizontal & Vertical)
You need to have the updated PS5 positioned like this.. unless you pay an extra $30 for the vertical stand. : r/gaming