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9 pin D-SUB male connector layout
9 pin D-SUB male connector
Used for connecting Megatech inteligent UPS (type I) or smart UPS (type II) to PC
PC
Pin name
PC
Pin
Direction UPS
Pin
UPS
Pin name
Description
NC 1 1 NC  
AC Power Failuce 2 2 AC Power Failuce Active negative level (negative impulse indicates a power failure)
NC 3 3 NC  
Common Ground of Pin 2, 5, 6 4 <> 4 Common Ground of Pin 2, 5, 6  
UPS Battery Low 5 5 UPS Battery Low Active negative level (negative impulse indicates a batery low power level)
Turn Off UPS 6 6 Turn Off UPS Active positive level (positive impulse sent by PC shuts down the UPS)
NC / GND for pin 6 7 <> 7 NC / GND for pin 6 NC in Type I cable. GND for pin 6 in Type II cable.
NC 8 8 NC  
NC 9 9 NC  
9 pin D-SUB female connector layout
9 pin D-SUB female connector
According to 1 reports in our database (0 positive and 0 negative) the Megatech M2501 UPS cables Types I, II pinout may be incorrect.

Is this pinout
Megatech M2501 UPS cables Types I, II visual pinout:click to enlarge
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