This is the Tee used by some of our Pixel2Things boards that allow for Data In and Data Out.
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
3-4-3 xConnect Tee (For Data In & Data Out)