MissingRemote posted a review on the Pulse-Eight Internal HDMI CEC Adapter

In an HDMI A/V environment, Consumer Electronics Control (CEC) is the glue that ties components together into a cohesive unit--able to be controlled by a single remote without the hassle, or expense, of a normal universal as well as removing infrared’s (IR) line-of-site requirement for playback devices. Where there can be problems with the protocol, most often the root cause is linked to the unfortunate fact that CEC works [best] when every component on the HDMI bus supports it – which until recently has left home theater PC (HTPC) users out in the cold. Coming to market with an HDMI+USB dongle, Pulse-Eight brought this segment into the modern age, but with the form factor trade-offs demanded of an external adapter and lacking of wake-from S5 (soft- off) some compromise was still required. Fortunately for those with Intel Media Series motherboards offering an HTPC_HEADER like the DH61AG or DH77DF, Pulse-Eight is back with an internal solution able to correct both of these gaps.

  Pulse-Eight Internal HDMI CEC Adapter Review