Welcome to our store! STABLE PERFORMANCE: PCIE X4 to U.2 adapter card features stable performance, high-speed lossless transmission, and strong compatibility CONVENIENT and PRACTICAL: The card has a PCIE X4 to SFF 8643 interface; the PCIE X4 to SFF 8643 interface must be used with a U2 cable THICK GOLD-PLATED PROCESSING: The PCIE X4 to U.2 adapter card has thick gold-plated gold fingers to make data transmission more stable WIDELY COMPATIBLE: The PCIE X4 interface can be compatible with PCIE Express X4/X8/X16 slots simultaneously, with no compatibility requirements for motherboard model SUPPORT SYSTEM: The PCIE expansion card supports the Win system, which can meet the needs of general users Item Type: PCIE Expansion Card Material: PCB Product Model: PH49 Applicable Slots: PCI E X4/X8/X16 Expansion Interface: SFF-8643 Support System: For Win Product Size: Approx. 120 x 79 x 35mm / 4.7 x 3.1 x 1.4in 1 x PCIE Expansion Card 1 x Screw Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.