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9 pin D-SUB female connector layout
Разъем 9 pin D-SUB female
APC Part# 940-0299A


Pin Number
Device 1
Pin Name
Direction APC
Pin Number
Device 2
Pin Name
1,4,6 tied hardware flow control      
2 RX UPS->PC 1 L  
3 TX PC->UPS 2 R  
5 GND --- 3 GND  
7,8 tied hardware flow control      


RX and TX are wrong.
TX should be 1 and RX should be 2 on APC side


Signal levels are zero to positive voltage only

3 pin stereo plug connector layout
Разъем 3 pin stereo plug
На распиновку APC management card 9630,9631 (940-0299a) есть 29 отзыв(а): 26 положительных и 1 отрицательных.

Эта распиновка
Источник(и) этой и дополнительной информации: hands and tester :)
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