https://community.hpe.com/t5/proliant-servers-ml-dl-sl/ultra3-cable-part-number/m-p/2507628#M4952 that is an ultra 3 cable which will work in this system so yes..if however you want the entire signal cable kit that includes the proper ultra 3 cable for this system the part number for that kit is 159320-001 Mon, 12 Nov 2001 00:00:00 GMT Mark Cloutier 2001-11-12T00:00:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/ultra3-cable-part-number/m-p/2507627#M4951 Connecting my 5304 Raid Controller and my ultra3 drive cage I have a cable that is labeled: <BR /> 166298-013 Rev. A <BR /> 0010035759 0008 <BR />The Ultra3 Ready NOTICE that came with the 5304 indicated that I was to use the Ultra3 cable upgrade kit part number: <BR />166389-B21 non hot plug <BR />166390-B21 hot plug <BR /> <BR />Searching Compaq's website, I have been unable to locate the cable pn that is supplied with the above cable kit(s). <BR /> <BR />Is my cable (166298-013 Rev. A) the correct ultra3 cable? <BR />Thanks, <BR />Steve Wed, 21 Mar 2001 00:00:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/ultra3-cable-part-number/m-p/2507627#M4951 Ayman Altounji 2001-03-21T00:00:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/ultra3-cable-part-number/m-p/2507628#M4952 that is an ultra 3 cable which will work in this system so yes..if however you want the entire signal cable kit that includes the proper ultra 3 cable for this system the part number for that kit is 159320-001 Mon, 12 Nov 2001 00:00:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/ultra3-cable-part-number/m-p/2507628#M4952 Mark Cloutier 2001-11-12T00:00:00Z