Asus RS720Q-E7/RS12 User Manual page 23

Removing the server node
1. Remove the screw located on the node latch.
2. Hold the server node lever and press the node latch.
3. Firmly pull the server node out of the server chassis.
When installing only two nodes, install the nodes to node slot number 1 and 3 or
number 2 and 4. Refer to section 1.5 Rear panel features for details.
ASUS RS720Q-E7/RS12, RS724Q-E7/RS12, RS726Q-E7/RS12 2-3