The G-302 v3 802.11g Wireless PCI Adapter is a network card that enables wireless internet connectivity in a desktop PC using the 802.11g Wi-Fi standard. This standard operates in the 2.4 GHz frequency band and provides speeds up to 54 Mbps, which is suitable for many basic internet and home networking tasks. The "v3" in the name likely indicates the third version of the adapter, which may have updated hardware or features compared to earlier versions.

To use this adapter on a Windows computer, you will need to install the appropriate driver. The driver allows the operating system to communicate with the adapter, ensuring that it functions properly.