a High Performance Pcie 3.0 Switch Based On The Broadcom Pex9733 Chipset With A Pcie 3.0 X8 Host Interface. On Supported Thinksystem Servers, The Adapter Provides Four Pcie X4 Connections Supporting Four Nvme Drives. Four Mini-sas Hd X4 (sff-8643) Internal Connectors.