The SX-PCEAC-DB is an 802.11ac compliant dual-band 3x3 PCIe Mini Card. It is based on the the Qualcomm Atheros QCA9880 chipset, designed to deliver wireless data rates of up to 1.3Gbps. The SX-PCEAC-DB supports 20/40/80MHz and 256-QAM to maximize bandwidth efficiency.
SX-PCEAC-DB card which is Qualcomm Atheros QCA9880 chipset based achieves max data transfer rate: 1.3Gbps. It is 3x3 SU-MIMO with Wide band 80MHz mode and high density modulation mode.