The 4 x 4 Gemini Stacking Kit with Yoke for Gemini from Litepanels allows four Gemini panels to be mounted together in a 2 x 2 configuration. The yoke has a 1-1/8" Junior pin and includes the mounting hardware. An optional accessory is the daisy-chain cable (BH# LI4100086) that allows you to power an adjoining Gemini panel from one AC outlet. By adding the cable to each additional panel you are powering multiple Gemini LED fixtures.