Upgrade From: Two generations from "current product". Example: 2x750 to 2x1050, 2x750 to 4x1050, 2x900 to 2x1200, 2x900 to 4x1200,4x900 to 4x1200 Order UG-RMA with this allowance code. Customer must return one system board with 2 or 4 UltraSPARC III CP