Lenovo 46M4002 Installation And Maintenance Manual page 22

Attention: You must disconnect the main input power before you connect or disconnect the input
power cord from the PDU.
4. If the PDU comes with a detached power cord, connect the power cord. Align the connector on the
power cord that comes with the PDU with the connector on the front of the PDU, turning as necessary
for key alignment; then, turn the twist-lock on the connector clockwise until it locks into place.
Key alignment
Twist lock
14
1U C19 and C13 Switched and Monitored PDUs Installation and Maintenance Guide