Aten CS1754 pinouts
The connector/pinout information may be applied to the Aten (show all pinouts) model CS1754

 ATEN KVM Switches Firmware upgrade cable pinout RS232 TO RJ11, UPGRADE FIRMWARE CABLE FOR ATEN KVM SWITCHES. This is for the CS-175, cs-1732a, CS1924M.
ATEN KVM Switches Firmware upgrade cable pinout RS232 TO RJ11, UPGRADE FIRMWARE CABLE FOR ATEN KVM SWITCHES. This is for the CS-175, cs-1732a, CS1924M.