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10 Best io port cards of 2026

Explore top picks
  • Best Choice

    1

    BestParts Type-C USB 3.1 Gen2 Port Flex IO v2 Card Replacement for HP 600 800 805 400 Z2 G6 G7 G8 G9 L83416 SFF DM MINI PC L85068-001 L76508-001
    BestParts

    BestParts Type-C USB 3.1 Gen2 Port Flex IO v2 Card Replacement for HP 600 800 805 400 Z2 G6 G7 G8 G9 L83416 SFF DM MINI PC L85068-001 L76508-001

    9.7
    Exceptional
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  • Value for Money

    2

    IO CREST 10 Port SATA III to PCIe 3.0 x1 Non-RAID Expansion Card JMB582 Low Profile Bracket, (SY-PEX40167)
    IO CREST

    IO CREST 10 Port SATA III to PCIe 3.0 x1 Non-RAID Expansion Card JMB582 Low Profile Bracket, (SY-PEX40167)

    9.6
    Exceptional

  • 3

    BestParts HDMI Small Board Replacement for 3TK75AA HP EliteDesk 705 G4 DM SFF MT L25757-001 L37415-001 Port IO Option Card
    BestParts

    BestParts HDMI Small Board Replacement for 3TK75AA HP EliteDesk 705 G4 DM SFF MT L25757-001 L37415-001 Port IO Option Card

    9.5
    Excellent

  • 4

    IO Crest 4 Port SATA III Expansion Card with Low Profile Bracket - 6Gbps SATA 3.0 Controller PCI Express x1 ASMedia 1064 for Windows10/8/7/XP/Vista/Linux
    IO CREST

    IO Crest 4 Port SATA III Expansion Card with Low Profile Bracket - 6Gbps SATA 3.0 Controller PCI Express x1 ASMedia 1064 for Windows10/8/7/XP/Vista/Linux

    9.3
    Excellent

  • 5

    BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA
    BestParts

    BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA

    9.2
    Excellent
  • See Today’s Deals & Prices

  • 6

    axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to PCI I/O Card Adapter
    axGear

    axGear 2 Ports Dual Bidirectional RS-232 DB9 9-pin Serial Port to PCI I/O Card Adapter

    9.1
    Excellent

  • 7

    BestParts Internal Serial Port Flex IO Board Card Replacement for HP 400 G4 G5 SFF MT DM MINI 600 800 405 705 G4 DM 906312-001 914907-001
    BestParts

    BestParts Internal Serial Port Flex IO Board Card Replacement for HP 400 G4 G5 SFF MT DM MINI 600 800 405 705 G4 DM 906312-001 914907-001

    9.0
    Excellent

  • 8

    ELIATER 2-Port PCIe Serial Expansion Card with Industrial DB9 RS232 COM Ports, 16C550 UART WCH382 Chip for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, Low Bracket Included
    ELIATER

    ELIATER 2-Port PCIe Serial Expansion Card with Industrial DB9 RS232 COM Ports, 16C550 UART WCH382 Chip for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, Low Bracket Included

    8.9
    Very Good

  • 9

    StarTech.com PCI Serial Parallel Combo Card with Dual Serial RS232 Ports (DB9) & 1x Parallel LPT Port (DB25) - PCI Combo Adapter Card - PCI Expansion Card Controller - PCI to Printer Card (PCI2S1P2)
    StarTech.com

    StarTech.com PCI Serial Parallel Combo Card with Dual Serial RS232 Ports (DB9) & 1x Parallel LPT Port (DB25) - PCI Combo Adapter Card - PCI Expansion Card Controller - PCI to Printer Card (PCI2S1P2)

    8.8
    Very Good

  • 10

    BestParts VGA Port Flex IO Board Card for HP 400 600 800 G3 G4 G5 SFF MT DM MINI 914970-002 914970-001 906321-002
    BestParts

    BestParts VGA Port Flex IO Board Card for HP 400 600 800 G3 G4 G5 SFF MT DM MINI 914970-002 914970-001 906321-002

    8.7
    Very Good