Features: brand new and high quality Antenna, 2 x 5dBi removable dual band omni-directional antennas. Bluetooth-compatible 4.2, available for 10-30 meters (without any blocking). Complies with IEEE 802.11ac IEEE 802.11n / a / b / g standards. Operating system, for Windows 7 / 8.1 / 10. Optional 2.4G / 5G dual frequency, 5Ghz band speed up to 867Mbps, 2.4Ghz band speed up to 400Mbps. Specifications: Type: PCIE Wireless Network Card Transmission Speed: 1300Mbps Interface: PCI Antenna: 2 x 5dBi Bluetooth-compatible: 4.2 Working frequency: 2.4G/5.8G IEEE WLAN standard: 802.11 a / b / g / n / ac Data Rate: 5.GHz 867Mbps , 2.4GHz 400Mbps Package Includes: 1x1300M PCI-E Network Card 1 x data cable 1 User Manual 1 x screw 1 x screwdriver note: We have upgraded the chipset to a Realtek one, so the card you received could be the Realtek or for Qualcomm chipset. We send these 2 models of chipsets at random, they work at the same level. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.