ASUS Dual Band 802.11AC Wireless-AC2100 PCI-E Wi-Fi Adapter - Newegg.com
StarTech AC1200 Dual Band Wireless-AC PCIe Network Card
StarTech.com PCI Express AC1200 Dual Band Wireless AC Network Adapter PCIe 802.11ac WiFi Card Add high speed 802.11ac WiFi connectivity to a desktop PC through a PCI Express slot with dual band