This 3-4-3 Tee & 4-Core Pigtail is used by some of our products to provide clean support for daisy chaining (Data In and Data Out). This allows you to use a single 4-Core pigtail connected to our products, instead of 2 separate pigtails.
3-4-3 is oriented as: Male-Female-Female
Side A (male) has V, G and DI
Middle (female) has V, G, DI and DO
Side B (female) has V, G and DO