Brands like Sony and Microsoft create custom hardware for development and stress testing known as dev kits.
Xbox 360 Development Kit, Xbox Wiki
Xbox Series X review
Xbox Series X vs Xbox Series S: Which console is right for you?
Microsoft's shutdown of Xbox 360 storefront is another blow to video game preservation – GeekWire
Got my xbox 360 dev kit today! Running on a ultra low OS 2.0.7366.0! : r/ xbox360
Ever Wanted To Try An Xbox 360 Dev Kit? Here Is How Much They Go For Today
This is a refurbished Xbox 360 Pro console 20 GB Hard Drive 1 Wireless Controllers Sleek set-top design with horizontal or vertical placement option
Xbox 360 Pro 20 GB
Rumor Control: Xbox 360 shortages and the P$$$3 - GameSpot
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Microsoft Xbox Series S 512GB Console
The Steam Deck wasn't born ready, but it's ready now - The Verge
Xbox Series X review: should PC gamers buy one?
Score Dev Kits For Xbox, Playstation, And Nintendo