This unit is a great Blackmagic Design multi - view device for HD. Please note that it does not come with a power supply.

This Blackmagic Design multi - view device is easy to use. First, connect it to your HD sources according to the port labels. Then, you can view multiple HD channels on one screen. Since it doesn't have a power supply, you need to use your own suitable power adapter. When using, keep it in a well - ventilated place to avoid overheating. For maintenance, just wipe it gently with a soft, dry cloth from time to time to keep it clean.