The TP-LINK TL-WA855RE 300 Mbps Wifi Range Extender is a white device designed to extend the range of your wireless network. With a frequency band of 2.4 GHz, this extender from TP-LINK is compatible with various routers and networking devices. The model TL-WA855RE offers a reliable solution for improving connectivity in your home or office setting by amplifying the signal strength and coverage area of your Wi-Fi network.