The aluminum alloy heat sink is only suitable for CM4 (Raspberry Pi Compute Module 4)
2 installation methods: Method A: Attach this heatsink to the CM4 motherboard; Method B: this heatsink with CM4 motherboard as a unit to attach to IO board. For more details see the pictures.
Heatsink Dimesion: 55mmx40mmx5mm/ 4.4" x 1.6" x 0.2"(L*W*H); Heatsink Weight : 0.5 oz / 14 gram
Notched for antenna section: no hindrance to the antenna
Package Inlcudes: 1 x Aluminum Heatsink; 1 x Thermal Tape; 4 x Standoff; 4 x Nut; 4 x Rubber Gasket; 4 x M2.5 long screws; 4 x M2.5 short screws; 1 x Screw Driver