Realtek RTL8723BE 300Mbps 802.11n M2 NGFF Wireless Card Mini PCI E WiFi Adapter + Bluetooth 4.0 for Lenovo E450 E550 E555 Y50|mini pci e wifi|pci e wifiwifi adapter - AliExpress
RTL8723BE Wireless Wifi Card, High Speed 150Mbps Wireless WiFi Network Card, Bluetooth4.0, Support Wireless Protocol 802.11BGN, Mini NGFF /M.2 Wireless Card: Amazon.co.uk: Electronics & Photo