X9285A - Sun S1.0 Daughterboard Assembly with 2 X 2.4GHz CPU and VRMs for Fire V40z X9285A - Sun S1.0 Daughterboard Assembly with 2 X 2.4GHz CPU and VRMs for Fire V40z $822.48
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