Answer first

Store, move and run are different verbs.

Series expansion-card material establishes a distinct storage path for Series X|S. It does not justify a universal statement about every USB drive, every Series-optimized build or every exception. Source ↗ Source ↗

01 / Series X|S storage paths

Storage pathCan storeCan run directlyBest use
Internal SSDSeries-optimized and backward-compatible gamesYesPrimary installation and play
Official Storage Expansion CardSeries-optimized and backward-compatible gamesYesMore capacity with internal-SSD-class behavior
USB 3.1 HDD or SSDSeries-optimized and backward-compatible gamesXbox One, Xbox 360 and original Xbox games; not Series-optimized buildsArchive Series builds or play supported older-generation games

Why “optimized” matters

Microsoft’s Series X|S storage guidance distinguishes games optimized for the Velocity Architecture from backward-compatible Xbox One, Xbox 360 and original Xbox games. Check the exact build before deciding where it can run. Source ↗ Source ↗

Method

Claims separate documented facts from interpretation and uncertainty. Read our method.

Updates

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