Broadcom’s BCM94321MC reference design targets draft-IEEE-802.11n-compliant designs for the latest notebook PCs that embed PCI Express support. The dual-band design integrates Broadcom's Intensi-fi chip set including the the BCM2055 radio, and the BCM4321 2.4/5 GHz baseband and media access controller. The MIMO-enabled design supports multiple simultaneous data or "spatial" streams and Broadcom claims the design can achieve data rates of over 300 Mbps. Morever, the design is backwards compatible with existing Wi-Fi products.