TE Connectivity SFP+ Stacked (Dual Row) Cage/Connector Assemblies. SFP+ stacked (Dual Row) cage/connector assemblies that support data rates of 10 Gb/s. These SFP+ stacked (Dual Row) cage/connector assemblies accommodate belly-to-belly mounting, have an integrated connector that uses a patented wafer construction and have 4 light pipes per column. Stock numbers ; 756-1142 756-1142 , ; 756-1145 756-1145 and ; 756-1149 756-1149 have an elastomeric gasket for EMI containment. Stock numbers ; 756-1158 756-1158 and ; 787-1705 787-1705 have EMI springs.