Dell EMC PowerEdge MX7000 Installation And Service Manual page 29

a To release the sled release lever, push the blue release button on the sled.
2 Hold the sled release lever, pull the sled out of the enclosure.
NOTE: Ensure that you install a sled blank if you are removing the sled permanently.
CAUTION: Operating the enclosure without a blank, for an extended time can result in overheating.
CAUTION: Ensure that the sled is supported with both hands while you are removing the sled.
Figure 15. Removing a storage sled from an enclosure
Installing and removing system components 29