RT2571W/RT2571WF is a Wi-Fi chipset that is designed and manufactured by Ralink Technology Corporation, which is now a part of MediaTek. This chipset is used in various wireless network devices, including wireless routers and USB Wi-Fi adapters. The RT2571W chipset supports the IEEE 802.11b/g wireless standards and provides a data transfer rate of up to 54Mbps. It also supports various security protocols, including WEP, WPA, and WPA2, which help to ensure the security of the wireless network.