Cable N Wireless 9dBi 2.4 GHz WiFi Signal Booster High-Gain Screw-On Swivel 3G Antenna with Magentic Base RP-SMA Connector for Netgear, Belkin, D-Link, Alfa Router Adapter (US Seller) dBi: 9 Replaces Factory Standard Antenna and Boosts the Range of your Router as much as 4x RP-SMA male connector 90 degree joining near base Length: 14.75-inches (approximate) Color: Black US Seller Ship from US