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9 pin D-SUB male connector layout
9 pin D-SUB male connector
at the UPS
9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the PC
Pinout compatibility:
  • APC Back-UPS Pro BP650
  • APC Back-UPS Pro BP280S
  • APC Back-UPS Pro BP420
  • APC Back-UPS Pro BP420S
  • APC Back-UPS Pro BP420SC
  • APC Back-UPS Pro BP650S
  • APC Back-UPS Pro BP650SC
  • APC Matrix MX3000
  • APC Matrix MX3000XR
  • APC Matrix MX5000
  • APC Matrix MX5000XR
  • APC SC420
  • APC SC620
  • APC Smart-UPS 3.5G SU700RM2U
  • APC Smart-UPS 3.5G SU1000RM2U
  • APC Smart-UPS 3.5G SU1400RM2U
  • APC Smart-UPS 3G SU420NET
  • APC Smart-UPS 3G
  • APC Smart-UPS 3G SU1000NET
  • APC Smart-UPS 3G SU1400NET
  • APC Smart-UPS 3G SU1400RMXL3U
  • APC Smart-UPS 3G SU2200RM3U
  • APC Smart-UPS 3G SU2200RMXL3U
  • APC Smart-UPS 3G SU2200RMXLNET
  • APC Smart-UPS 3G SU2200XLNET
  • APC Smart-UPS 3G SU2200XLTNET
  • APC Smart-UPS 3G SU3000NET
  • APC Smart-UPS 3G SU3000RM3U
  • APC Smart-UPS 3G SU3000RMNET
  • APC Smart-UPS 3G SU3000RMT3U
  • APC Smart-UPS 3G SU3000RMXL3U
  • APC Smart-UPS 3G SU3000TNET
  • APC Smart-UPS 3G SU5000
  • APC Smart-UPS 3G SU5000RMT5U
  • APC Smart-UPS 3G SU620NET
  • APC Smart-UPS 3G SU700NET
  • APC Smart-UPS SMT100
  • APC Smart-UPS SUA1000
  • APC Smart-UPS SUA1000XL
  • APC SU1000NET
  • APC SU1000RM2U
  • APC SU1400NET
  • APC SU1400RM2U
  • APC SU1400RMXL3U
  • APC SU2200NET
  • APC SU2200NET
  • APC SU2200RM3U
  • APC SU2200RMXL3U
  • APC SU2200RMXLNET
  • APC SU2200RMXLTNET
  • APC SU2200RMXLTNET
  • APC SU2200XLNET
  • APC SU2200XLTNET
  • APC SU3000NET
  • APC SU3000RM3U
  • APC SU3000RMNET
  • APC SU3000RMT3U
  • APC SU3000RMXL3U
  • APC SU3000TNET
  • APC SU420NET
  • APC SU5000
  • APC SU5000RMT5U
  • APC SU5000T
  • APC SU5000T
  • APC SU620NET
  • APC SU700NET
  • APC SU700RM2U
  • APC SUA1500
  • APC SUA2200
  • APC SUA2200RM2U
  • APC SUA3000
  • APC SUA3000RM2U
  • APC SUA3000RMT2U
  • APC SUA750XL
APC Part# 940-0024C, # 940-0024B, # 940-0024D or 940-1524(black cable). Compatible with most APC UPSs that have a DB9 serial port. Should work with APC PowerChute or Apcupsd(UPS Server for Linux)

Should be compatible with: 

  • Back-UPS Pro    BP650, BP650S, BP650SC, BP420, BP420S, BP420SC, BP280S (also compatible with  940-0095B cable)
  • Smart-UPS 3G    SU420NET, SU620NET, SU700NET, SU1000NET, SU1400NET, SU2200NET, SU3000NET, SU2200XLNET, SU2200XLTNET, SU3000TNET, SU5000T, SU1400RMXL3U, SU2200RM3U, SU2200RMXL3U, SU2200RMXLNET, SU2200RMXLTNET, SU3000RM3U, SU3000RMNET, SU3000RMT3U, SU3000RMXL3U, SU5000, SU5000RMT5U
  • Smart-UPS 3.5G    SU700RM2U, SU1000RM2U, SU1400RM2U
  • Smart-UPS 3.6G(Serial)    SUA1000, SUA1500, SUA750XL, SUA1000XL
  • Smart-UPS 4.0G(Serial)    SUA2200, SUA2200RM2U, SUA3000, SUA3000RM2U, SUA3000RMT2U
  • Smart-UPS SC    SC420, SC620
  • Matrix    MX3000, MX5000, MX3000XR, MX5000XR

 

APC Part# 940-0024A, 940-0024B, 940-0024C, 940-0024D, 940-1524  cable scheme

According to APC forum, letter suffix is related to (change of?) manufacturer or revision, not wiring, and cables are electrically interchangable.

'Simple scheme' diagram further below looks correct for 940-0024 & A,B,C or D revisions and 940-1524 which is 15' long cable; and matches what viewed on a third-party site. 

 

Simple scheme

UPS
Signal Name		 DB-9 Male
(UPS end)		 DB-9 Female
(PC end)		 PC
Signal Name
TX / AC Fail 2 2 Rx, Received Data
RX / Shutdown 1 3 Tx, Transmitted Data
Common 9 5 GND

At the PC end: pins 1,4 (DCD, DTR) shorted; pins 7,8 (RTS, CTS) shorted.
DB-9 shells are also connected.


 

Alternative scheme. Smart UPS Console Cable  APC part # is unknown.

DB 9 PC Male
UPS DB 9 Female
Comment
1 & 2
2
RX??  Short Pins 1 & 2 on PC side connect to Pin 2 on UPS side
3
1
TX ??
4
N/C
No Connection
5
9
GND
6
N/C
No Connection
7 & 8
N/C
Short Pin 7 & 8 on PC side.

Terminal Set Up:

2400 baud 8 bit no parity 1 stop no handshake.

Apply the port settings to establish the connection.
 Press <Enter> 3-5 times to display the username prompt.
Use the default username and password of apc

 

Is this document correct or incorrect?.
There are 45 reports in our database: 43 positive and 2 negative.
PinoutsGuide.com > UPS devices > Pinout of APC Smart UPS cable and layout of 9 pin D-SUB male connector and 9 pin D-SUB female connector
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