M/B Foxconn H-RS880-uATX (Aloe); CPU=AMD PhenomX4-975 3.6Ghz; 16Gb Ram: 1st SSD=SP A55 1TB; 2nd SSD=WD WDS500G2BOA 500 GB. MY PSU is Corsair CX550M. The new SSD (500Gb) was tested on 3 other computers as good using USB to SSD connector. I formatted it on one of those computers, but it still fails to show in Device Manager or Disk Management, but does show in BIOS. The SSD is a WD 500Gb.