Lenovo ThinkCentre M820z User Manual And Hardware Maintenance Manual page 45

5. Depending on your computer model, refer to one of the following to replace the M.2 solid-state drive.
• Type 1
Figure 62. Removing the screw
Figure 63. Removing the M.2 solid-state drive
Figure 64. Installing the M.2 solid-state drive
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Chapter 4 Replacing hardware