Delock pci express x4 controller card, 1xu.2 Nvme sff-8639, pci express x4 v4.0, This pci express card by delock expands the pc by one u.2 Interface. It can be connected e.G. The 2.5 Intel 750 series nvme ssd. Connector: internal: 1 x u.2 Sff-8639 male, 1 x pci express x4, v4.0, 1 X 2 pin led pin header male, for 2.5 Nvme ssd, supports nvm express nvme .