Features: Brand new and high quality Equipped with 4 U.2 Nvme SFF-8643 expansion ports. This product can only be used on PCIE slots that support PCIe splitting. Supports the use of an SSF-8643 to SFF-8639 cable to connect to a U.2 SFF-8639 solid state drive. Please note: this product does not include the SSF-8643 to SFF-8639 cable! Supports PCI-E 4.0, supports 2U chassis, high-speed lossless transmission, and strong compatibility This product is not plug and play! Requires machine support, BIOS settings, and is quite complex! Features 4 LED working status indicators for added convenience Specifications: Item: PCIE 4.0 to U.2 NVME Expansion Card Model: PH49 Material: PCB Slot: PCIE X4 X8 X16 Expansion Slot: SFF-8643 Port: 4 Ports Size: approximately 120x150mm / 4.72x5.91in Note: Please ensure that your motherboard's PCIe x16 slot supports pcie signal splitting. For details, please contact your motherboard's official customer service. Due to lighting effects and shooting angles, there may be some tolerance in the product, please understand. Please allow 0-2mm error due to manual measurement. Package includes: 1 pc x Expansion Card