Anybody that is looking for a way to power 3 external monitors, holding 3 separate displays (not mirroring displays) needs to get this product. I researched multiple different products and an external eGPU like the Sonnet Breakaway Puck is the only way to make this happen on a MacBook Air. Anything else you find will probably not work. A MacBook Pro is different. The MacBook Pro can power its 3 external on its own.