Dell Precision 530 System Information Manual page 23

                           !"# 
•
•
)
•
−
) 115
−
100 V/50 Hz
−

       
                  
       
   

       
   
       
   
(
(V)/60 (Hz)
100 V/60 Hz
100 V
230 V/50 Hz
(
115 V
                  
                             
21