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  1. ASUS ThunderboltEX 4 interface cards/adapter Internal Mini DisplayPort, PCIe, Thunderbolt, USB 2.0, USB 3.2 Gen 2 (3.1 Gen 2)
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    Intel Thunderbolt 4 JHL8540, 2 x USB Type-C (Thunderbolt 4), 2 x mini DisplayPort, 1 x 6-pin PCIe, 1 x USB 2.0 header, 1 x Thunderbolt header, PCIe 3.0 x4 Learn More
    $139.55
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  2. USB to Serial Cable Win Mac
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    Connect current and legacy serial RS232 (DB9) devices to a computer with this USB to serial cable - Use this USB to RS232 serial adapter to reliably connect barcode readers/scanners/networks switches/scales - This USB to serial cable is ideal for IT server rooms/industrial control/automation/POS/AV installations - Specifications: 3ft (91cm) Length, Max Baud 921... Learn More
    $27.99
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  3. 4 Port USB 3.0 PCIe Int Card
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    The VisionTek USB 3.0 PCI Express Card allows you to connect multiple USB peripherals to your PC without the expense of replacing your motherboard. The USB 3.0 4-Port PCI Express Card enhances the performance of data transmission beyond existing USB 2.0. It is the ideal interface for transferring large amounts of data to/from USB 2.0/3... Learn More
    $30.99
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  4. 2 Port USB 3.0 PCIe SFF Intern
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    2 Port USB 3.0 PCIe SFF Internal Card allows you to connect multiple USB peripherals to your PC without the expense of replacing your motherboard. The USB 3.0 2-Port PCI Express Card enhances the performance of data transmission beyond existing USB 2.0. Add 2 USB 3.0 ports to your current system, Compatible with USB 2... Learn More
    $29.99
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  5. DP Cyber 1S1P PCIe Card
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    Adds one RS-232 serial port and one parallel port to a PCI Express enabled system Learn More
    $59.99
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  6. DP USB 3.0 4 Port PCIe Card
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    Siig DP USB 3.0 4-Port PCIe Card adds four external SuperSpeed USB 3.0 5Gbps Type-A ports to your PCIe enabled desktop computer Learn More
    $49.99
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  7. DP USB 3.0 7 Port PCIe I e
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    SIIG DP USB 3.0 7-Port PCIe i/e - Standard and Low-Profile Design - Get the scalability you need by adding 7 USB 3.0 ports with SATA power to your computer - PCIe USB 3.0 Adapter Card - UASP Support - 6 External & 1 Internal Ports - USB-A 5Gbps - x1 slot - Native OS Support in Windows 11/10/8 - Standard & Low-profile bracket - Backward compatible. Learn More
    $79.99
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  8. USB 3.0 7 Port PCIe Host Card
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    USB 3.0 7-Port PCIe Host Card, Data transfer rate Up to 5Gbps, Over-Current protection, Easily adds seven USB 3.0 ports to your PCIe enabled desktop computer Learn More
    $60.05
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  9. DB9 Serial Slot Plate Bracket
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    Add an extra serial port to the back of your PC from your motherboard. motherboard adapter motherboard serial port Comparable to HP PA716A. Learn More
    $8.99
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