RJ45 splitter

Does anybody have a good source or PN for a version of this for RJ45 jack that splits out pairs 1&2 (white/blue and white/orange on one side and 3&4(white/green and white/brown) on the other? Everything I see online is either over complicated or doesn't specify if it splits the pairs or duplicates them.

Does anybody have a good source or PN for a version of this for RJ45 jack that splits out pairs 1&2 (white/blue and white/orange on one side and 3&4(white/green and white/brown) on the other? Everything I see online is either over complicated or doesn't specify if it splits the pairs or duplicates them.