The AC1200 WIFI 5 PCI-E Wireless Adapter is an internal card for desktop PCs. It supports wireless protocols 802.11n, 802.11a/g, and 802.11ac with a transmission speed of 1200 Mbps. The adapter has Bluetooth capability and operates on both 2.4G & 5G frequencies. It has a PCI Express interface, a length of 17cm, and is compatible with Universal products. The manufacturer, JUSTOP, offers a 1-year warranty.                                                                                                                                                                                                                                                                                                                                                                                                                              Hi, Thank you for visiting our store. Its Small family business please contact us. Before opening any dispute, We will resolve your issues.