X7245A - Sun S2.0 Daughterboard Assembly with 2? 2.8GHz CPU and VRM's for Fire V40z X7245A - Sun S2.0 Daughterboard Assembly with 2? 2.8GHz CPU and VRM's for Fire V40z $1,051.43
370-6929 - Sun (Motherboard) for SunFire V20z / V40z 370-6929 - Sun (Motherboard) for SunFire V20z / V40z $380.06
370-7691 - Sun K2.0 (Motherboard) for Fire V20Z / V40Z 370-7691 - Sun K2.0 (Motherboard) for Fire V20Z / V40Z $245.34