Mini PCIE Wireless Wifi Card BT 4.0 Network Express Interface Module 7260HMW bn Item Type: Mini PCI-E Wireless Wifi Card Model: 7260hmw bn Module: 802.11 b/g/n Bluetooth bt Model Features: 7260 bn 300 m, with 4.0 Bluetooth For Hp pavillion 14,15,17/envy 14 15 17 dedicated wireless card But also supports the use of mini pci-e interface for machines from brands such as for Dell/acer gini/Sony/ /Hasee/Toshiba/Asus, etc. How e:  1. Use a small screwdriver to open the back cover of the laptop, and find the wireless network card (the wireless network card is a square, and there are two black and white wires connected. There are two small screws to fix) 2. Unscrew the two fixed screws with a screwdriver, put them aside, and keep them 3. Remove the old wireless network card and replace it with a new one, return to the installation according to the original disassembled route, and fix it. 4. Then boot up and install the driver automatically (the driver can be matched by the supplier according to the customer's computer model)