Can I use the 4 Port Component Video Switch w/ IR Learning as composite video switcher?
Yes, just use one of the component video ports instead of all three. Just make sure to use the same colored connector for each of your video connections.
Does Monoprice offer the optional power supply for the Passive HDMI Splitters?
Unfortunately the power supply is intended to be optional, as stated in the product's description, and we would not carry a compatible part. If you would like to source the power supply for the units, they will use the following specifications:
Product# 8150 will require a 5V DC power supply with a 3.8mm barrel and 1.3mm pin.
Product# 8202's optional power supply specifications are 5V DC with a 3.8mm barrel and 1.3mm pin.