The D-Link DWL-50AT is a 5dBi Gain Dipole Antenna with Reverse SMA connector. It can help to improve the transmit rate and extend the transmit distance of wireless access point (DWL-1000AP, DWL-900AP) or wireless gateway router (DI-714) which have a reverse SMA connector. To ensure a better performance, you should not only improve the RF on transmitter but also that on receiver, i.e. a high gain card.