Use this Mini DisplayPort to HDMI cable to connect a Mini DisplayPort plug to convert to an HDMI connector. That way, you can connect an HDMI cable to a device with a Mini DisplayPort input.
A Mini DisplayPort to HDMI cable can be used for a MacBook, iMac Intel or PowerBook fine.
This Mini DisplayPort to HDMI cable can also be used for all other devices with a Mini DisplayPort input / output.