Features: 1. ZM-NB32K does not require a fan, and thus does not need to be powered and does not create noise or vibration. 2. The Northbridge chipset can be cooled down to an optimal temperature without generation of noise. * Recommendation : When used with CPU coolers such as CNPS6000-XXXX (socket462) and CNPS6500B-XXXX (socket478) having FB123, or with CNPS7000-XXXX (socket478/754), more stable and silent operation can be achieved. Components: 1) One ZM-NB32K Heatsink 2) One Supply of Thermal Grease 3) Bolts, Nuts, Links, Push Pins, Springs (Two of Each) Heatsink Specifications: 1) Model : ZM-NB32K 2) Dimensions : 37(L) X 37(W) X 32(H) mm 3) Material : Aluminum 4) Weight : 36g Compatible Northbridge Chipsets: ZM-NB32K is compatible with all Northbridge chipsets that do not have a built-in graphics chipset. Note 1) ZM-NB32K cannot be used on motherboards that lack mounting holes around the Northbridge chipset. 2) If the provided push pins don't match the holes on the motherboard, use the push pins supplied with motherboard. 3) Do not install ZM-NB32K if it interferes with components on the motherboard.