On 12/26/2013 2:54 PM, Fred Smith wrote: > the PS I'll be using in this system is an existing PC POwer & Cooling > 500W unit, which should be up to the task. (It has been running the > existing system for something like 3-4 years, with a Phenom-II X2 and > two HD and two optical drives, 24X7.) what spec is it? modern systems want ATX12V v2.x, which puts almost all the power on the +12V rail. older PSU specs had more juice on the 5V side, which is almost unused nowdays. An ATX12V V1.x supply /can/ be used on a newer system, if you treat it as a smaller PSU (drawing say, no more than 350 watts from a 500W ATX12V v1.x) -- john r pierce 37N 122W somewhere on the middle of the left coast _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos