Lenovo ThinkStation P340 Hardware Maintenance Manual page 87

Replacement procedure for 2.5-inch storage drive installed in the 3.5-inch front-access storage
enclosure through Type-2 storage drive converter
Before removing an old 2.5-inch storage drive, safely eject the old storage drive from the operating system
first. For more information, see the Windows help system.
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Chapter 7 Hardware removal and installation