Blackmagic Design Power Supply for HDLink Pro (12V / 20W) PSUPPLY-12V20W Specification: Power Output: 12V DC / 20W Weight: 0.33 lb (150 g) Feature: The Power Supply for HDLink Pro (12V / 20W) from Blackmagic Design is a replacement or backup 12V DC power supply that's compatible with Blackmagic's HDLink Pro monitoring solutions. Rated at 20W, the power supply requires an IEC power cable. Note! IEC power cable required.