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The HSMG-C120 part of Broadcom is an 802.11n WLAN mini-PCI Express (mPCIE) card that enables seamless compatibility with a variety of network conditions and protocols, allowing connectivity of up to 150 Mbps on 2.4GHz or 300 Mbps on 5 GHz networks. It supports 40MHz and 80MHz signal bandwidth, as well as short guard interval and packet aggregation, delivering better throughput performance compared to 802.11b/g devices. This part also is a 3x3, 2-spatial stream (2SS) device, and includes three transmit and three receive antennas, allowing data rates of up to 450 Mbps.