1 USB wifi antenna for Swann DVR's and NVR's Plugs into USB port for Wifi capability Works on DVR Series DVR-4480, DVR4580, DVR4680, DVR-4780, DVR-4980, DVR-5580, DVR-5680 Works on NVR Series NVR-8580, NVR-8780 DVR and NVR May require firmware update (Firmware version 8 or higher required)
eBay