Cover apparatus for dissipating heat and shielding electromagnetic interference

摘要

A cover apparatus for a plug-in interface card is provided. The cover apparatus comprises a plate, which secures on a circuit board of a wireless local area network (WLAN) card. The plate has at least one concave corresponding to a chip on the WLAN card. The concave directly or indirectly contacts the chip to dissipate heat. The cover apparatus also comprises a fastener installed near the chip to fix the plate on the circuit board. By the concave and thefastener, the plate is able to not only shield electromagnetic interference (EMI) but also dissipate heat from the chip.