There are two download links for Dell SUU
http://en.community.dell.com/techcenter/systems-management/w/wiki/1968.dell-openmanage-downloads-explained.aspx
32 bit
64 bit
Does that mean they are to run on 32 or 64 bit systems or does it mean they have the info to update 32 or 64 bit systems because only the 32 bit link has content.