Lenovo 30E0000FMB User Manual page 75

6. To install a 3.5-inch storage drive, ensure that the conversion bracket is unfolded. To unfold the bracket:
a. Remove the pin 1 and install it into the slot 2 .
b. Release tabs 1 , 2 , and 3 from the corresponding slots.
c. Unfold the bracket as shown.
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Chapter 8 CRU replacement