http://msmvps.com/blogs/bradley/archive/2005/10/09/69944.aspxThere a fix for ya When an HP T700 or HP XR5500 Uninterruptible Power Supply (UPS) is connected to a ProLiant ML150 G2 server through the serial port using a serial cable, the CPU utilization will remain constant at 100 percent. As soon as the serialenCommunityServer 2008.5 SP2 (Build: 40407.4157)http://msmvps.com/blogs/bradley/archive/2005/10/09/69944.aspx#69981Mon, 10 Oct 2005 13:51:00 GMTd67277c4-116b-43f1-b688-e9ef184ea916:69981TrackBackWhen an HP T700 or HP XR5500 <br>Uninterruptible Power Supply (UPS) is connected to a ProLiant ML150 G2 <br>server&#160;through the serial port&#160;using a serial cable, the CPU <br>utilization will remain constant at 100 percent.&#160;As soon as&#160;the serial <br>cable is remove<div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=69981" width="1" height="1">