an AzureWave AW-NE186H mini PCI Express (PCIe) module.
It uses an Atheros AR5B125 chipset to provide older, single-band 802.11 b/g/n Wi-Fi connectivity over a 2.4 GHz frequency (with speeds up to 150 Mbps).Where is it used?Laptops and Netbooks: It is commonly pulled from older models, especially ASUS notebooks (such as the VivoBook or X-series).
Connection Type: It plugs directly into a half-size Mini-PCIe expansion slot on a computer's motherboard.Antenna Terminals: The two small gold circles near the top are the "Main" and "Aux" terminals where internal antenna wires snap on to receive a signal.