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6 x USB-A + 2 x USB-C 3.0 5Gbps PCI-Express Adapter Card, Compatible with Windows and Linux (Not support Mac OS)
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Amazon.com: MZHOU PCI-E 1 to 2 PCI-Express 16X Slots Riser Card - Higher Stability USB 3.0 Adapter Multiplier Card for Bitcoin Mining Compatible with Windows Linux Mac(No USB Cables) : Electronics
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StarTech.com Dual M.2 PCIe SSD Adapter Card, x8 / x16 Dual NVMe or AHCI M.
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