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Hot swap refers to the ability to replace or add components to a device or system without needing to power it down or interrupt its operation. Commonly used in servers, storage systems, and some mobile devices, hot-swappable components include items like hard drives, batteries, SIM cards, and memory cards. This feature enhances system uptime and convenience by allowing users to perform maintenance or upgrades without rebooting the device. In mobile technology, for example, hot-swappable SD or SIM cards let users switch cards without turning off the phone—though not all devices support this functionality.
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