Some monitors and TVs only have a single HDMI port. This is fine if your entertainment system is simple, but if you have multiple devices, it can get really annoying to plug and unplug the HDMI port ...

If you find yourself running out of HDMI inputs, or want to send the signal from one source to multiple TVs, you'll need either a switch or a splitter. Also called switchers or distribution amplifiers ...

HDMI (High Definition Multimedia Interface) equipped audio/video devices are gaining popularity and like them or not they are quickly becoming the industry standard now and for the foreseeable future.