This simple ups serial cable provides a reliable connection between a computer and an apc uninterruptible power supply ups the simpleups06 6 foot simple signaling serial ups cable features 1 db9 male connector and 1 db9 female connector allowing you to communicate from your computer work station or server to your ups power supply this cost effective serial ups cable can be used as a direct replacement to the ap9823 the startechcom advantage convenient replacement cable for apc ups devices