4.6 Connecting the server to the power source
The PRIMERGY RX2540 M1 server is equipped with up to two standard power 
supplies unit that automatically adjusts to any mains voltage in the range of 
100 VAC - 240 VAC or up to two DC hot-plug power supply unit that adjusts 
automatically to any power voltage in the range from -40.5 V to -57 V.
Connecting power cords to the mains
V CAUTION!
The power supply automatically adjusts to any mains voltage in the 
range of 100 VAC - 240 VAC. You may only operate the server if its rated 
voltage range corresponds to the local mains voltage.
Figure 11: Securing power cord
Ê Pull the cable clamp up (1).
Ê Thread the power cord through the cable clamp (2).
Ê Press the cable clamp down until it engages to secure the cable (3).
Ê Connect the mains plug to a grounded mains outlet in the in-house power 
supply network or a power outlet of the rack socket strip (see also 
"PRIMECENTER Rack System" assembly guide).