D-Link DWA-131 300 Mbps Wireless Nano USB Adapter (Black) for Desktop

Connects your computer to a high-speed wireless network
Supports WPA/WPA2 wireless encryption to help prevent outside intrusion and protect your personal information from being exposed.
3 Year Brand Warranty
2.4Ghz frequency band (300mbps)
2 fixed internal Wi-Fi antenna
N300 MIMO Wi-Fi USB Adapter
This is a plug and play device with generic configuration
Compatible with all CCTV DVRs