The "generic" layout names are ISO (European) versus ANSI (US). The ISO Enter key is two keys tall and narrower. ISO also has a shorter left Shift key, which leaves space for an extra key.
Dell has a few models with keyboards that accept both layouts, but in most laptops the "grid" above the keys prevents switching between them, which makes it really annoying if you ever buy one with an ISO layout, hoping to be able to just buy an ANSI keyboard later to replace it...
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The "generic" layout names are ISO (European) versus ANSI (US). The ISO Enter key is two keys tall and narrower. ISO also has a shorter left Shift key, which leaves space for an extra key.
Dell has a few models with keyboards that accept both layouts, but in most laptops the "grid" above the keys prevents switching between them, which makes it really annoying if you ever buy one with an ISO layout, hoping to be able to just buy an ANSI keyboard later to replace it...