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U3142CX1 is a practical PCIe x1 expansion card powered by ASM3142 controller chip. It adds two high-speed USB 3.1 Gen2 Type-C ports reaching up to 10Gbps bandwidth for external SSD, portable hard drive and high-speed peripherals. Built in PCIe x1 specification, the card can be inserted into all sizes of PCIe slots on mainstream motherboards. Two different mounting brackets are included to match standard desktop and small-form-factor computer cases. This adapter works seamlessly with most Windows and Linux operating systems, an ideal upgrade to expand high-speed Type-C connectivity for old desktop PCs.