MSI SLI HB Bridge M NVIDIA GPU 2-Way Bridge Connector MS-4395 for PC Graphics

Nvidia SLI Bridge - SLI Bridge.2S | ASRock RoHS

EVGA PRO SLI BRIDGE HB (2 Slot Spacing) Model 100-2W-0027-LR

NVIDIA Quadro 4000 2GB GDDR5 Professional Graphics Video Card GPU

ASUS ROG SLI HB BRIDGE

4GB EVGA GeForce GTX 970 SC Graphics Card, Multi Monitor, DVI HDMI DisplayPort

an NVIDIA SLI connector to bridge multiple graphics cards together.

ASRock NVIDIA SLI HB Bridge 2S Card 80-CXG5P0-1C01