ASUS 4x4 802.11AC Wireless-AC3100 PCIe Adapter (PCE-AC88) Dual-band 4x4 AC3100 Wi-Fi with speeds up to 2100Mbps (5GHz band) and 1000Mbps 2.4GHz band. Operating Temperature: 0 C to 40 C ( F to F) External magnetic antenna base allows Flexible antenna placement to maximize coverage. Note- Support MU-MIMO technology Individual antennas can also attach directly to PCIe card for compact installation. Modulation-1024QAM. Custom heatsink effectively dissipates heat for improved stability and reliability. OS Support-Windows 10 86x64,Windows 7 86x64. R-SMA antenna connectors enable compatibility with a variety of aftermarket antennas. Quoted network speeds and bandwidth based on current IEEE 802.11ac specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac-compatible for best results