: Bring a USB drive to ensure every port works; a dead port can signal deeper logic board issues or liquid damage. Test Wi-Fi and Bluetooth to ensure they connect instantly.

: Play a speaker test at maximum volume to check for rattling or blown drivers. 2. Deep Dive: Battery & SSD Health

Buying a used MacBook is a strategic way to get premium hardware at a significant discount, but it requires a careful inspection to avoid "bricks" or hidden repairs. By 2026, the market is dominated by models, which offer far better longevity than older Intel versions. 1. Essential Hardware Checklist

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