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For Older IBM AS400 Models

IBM Legacy AS/400 Ethernet, LAN & WAN Adapters – PCI Network Cards

Discover a complete selection of genuine IBM compatible Ethernet adapters for older AS/400 and iSeries systems, including Gigabit and 10/100 Mbps copper/fiber options, PCI-based Ethernet IOAs, and WAN/modem connectivity solutions. These network cards deliver reliable performance for classic OS/400 workloads on legacy models such as 9406 series, early iSeries (e.g., 150, 170, 720, 820, 270, 500–800), and compatible configurations.

Why Choose IBM Legacy AS/400 Network Adapters?

Older IBM AS/400 and iSeries systems rely on proven PCI Ethernet, LAN, and WAN adapters for stable networking in enterprise environments. Options include copper UTP for standard twisted-pair setups, multimode fiber for higher speeds, full-duplex Gigabit/100 Mbps support, and WAN/modem IOAs for remote access. These adapters provide IEEE 802.3 compliance where applicable, multi-protocol support on WAN cards, and compatibility with OS/400 versions typical for legacy hardware. Feature codes (where available) and IOA designations ensure precise matching to older AS/400 configurations.

Available IBM Legacy AS/400 Ethernet & Network Adapters

  • IBM 2617 85F9107 Ethernet Adapter — High-performance Ethernet/IEEE 802.3 network adapter. Reliable server connectivity for classic AS/400 LAN environments. Part/FRU: 85F9107.
  • IBM 2723 PCI Ethernet IEEE 802.3 Adapter — PCI Ethernet adapter supporting half/full-duplex modes. Supplies Ethernet V2 and IEEE 802.3 MAC plus IEEE 802.2 LLC for AS/400 attachment.
  • IBM 2743 1Gbps PCI Ethernet IOA — 1 Gbps Ethernet IOA attaching to IEEE 802.3z high-speed LANs or 100 Mbps Ethernet via switches. Gigabit performance upgrade for iSeries servers.
  • IBM 2760 PCI 1Gbps Ethernet UTP IOA — 1 Gbps Ethernet UTP IOA for IEEE 802.3z high-speed LANs. Improves network performance on compatible AS/400 and iSeries systems.
  • IBM 2793 PCI 2-Line WAN w/Modem — Feature #9793 base. 2-line WAN with modem (non-CIM version, most countries). Port 0 modem support for remote AS/400 connectivity.
  • IBM 2805 PCI Quad Modem IOA — Four-line WAN modem IOA with RJ-11 ports. Supports V.92 56K Async SLIP/PPP and V.34 Fax up to 33.6K via internal modems.
  • IBM 2838 100/10Mbps PCI Ethernet IOA — Single-port 100/10 Mbps Ethernet IOA. Attaches to high-speed 100 Mbps Ethernet LANs and existing 10 Mbps networks via RJ45 UTP-5.
  • IBM 2721 PCI Two Line WAN MultiProtocol Communications IOA — Supports up to two multiprotocol WAN ports. Compatible with cables like #0348 V.24/EIA232. Attaches to MFIOP on AS/400 systems.
  • IBM 2742 PCI Two-Line WAN IOA — Supports up to two multiprotocol (RVX) WAN ports. Uses cables like #0348 or #0349 for AS/400 wide-area connectivity.
  • IBM 2745 PCI Two Line WAN IOA — Supports up to two multiprotocol communications ports. Compatible with standard WAN cables for legacy AS/400 environments.
  • IBM 2772 Dual WAN/Modem Adapter — Dual-port WAN/modem with RJ11. Supports V.90 56K Async PPP and fax up to 14.4K via internal modems for telephone-line connectivity.

Compatibility & Support

These adapters are compatible with older IBM AS/400 and early iSeries systems, including but not limited to 9406 series models (e.g., 170, 270, 500–800, 720, 730, 740, 810, 820), early iSeries servers (e.g., models 150, 170, and similar), and compatible PCI slots and configurations on legacy hardware.

Refer to individual product pages for exact slot priorities, maximum quantities, OS/400 support details, and installation notes. All items include a 60-day limited warranty.

  • IBM 2824 PCI LAN/WAN/Workstation IOP

    IBM 2824 PCI LAN/WAN/Workstation IOP

    IBM 2824 PCI LAN/WAN/Workstation IOP IOP IBM 2824 is an I/O processor with 32MB of memory. The following PCI communication adapters are supported: #2721: PCI Two-Line WAN IOA, #2722: PCI Twinaxial Workstation IOA, #2723: PCI Ethernet IOA, #2724:...

    $100.00
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  • IBM 2838 100/10Mbps PCI Ethernet IOA

    IBM 2838 100/10Mbps PCI Ethernet IOA

    IBM 2838 100/10Mbps PCI Ethernet IOA 1 Port 100Mbps Ethernet IBM 2838 PCI 100/10Mbps Ethernet IOA feature will allow the AS/400 to attach to standard 100Mbps high speed Ethernet LANs and also allow attachment to existing 10Mbps Ethernet LANs. The...

    $75.00
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  • IBM 4723 PCI 10Mbps Ethernet IOA

    IBM 4723 PCI 10Mbps Ethernet IOA

    IBM 4723 PCI 10Mbps Ethernet IOA 10Mbps Ethernet IBM 4723 PCI Ethernet IOA provides single attachment to one Carrier Sense Multiple Access/Collision Detect (CSMA/CD) LAN at 10Mbps. The feature consists of an adapter card and internal code that...

    $250.00
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  • IBM 4745 PCI WAN IOA

    IBM 4745 PCI WAN IOA

    IBM 4745 PCI WAN IOA WAN IBM 4745 supports up to two multiple protocol communications ports using the following cables: #0348: V.24/EIA232 20-Ft PCI Cable (default), #0349: V.24/EIA232 50-Ft PCI Cable, #0353: V.35 20-Ft PCI Cable, #0354: V.35 50-Ft...

    $100.00
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  • IBM 4761 PCI Integrated Analog Modem

    IBM 4761 PCI Integrated Analog Modem

    IBM 4761 PCI Integrated Analog Modem Modem IBM 4761 allows the modem function to be integrated into the IOA and supports multiple analog modem ports (8-phone lines). Each port supports V.90 client functions and other modem standards such as V.34...

    $150.00
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  • IBM 4838 PCI 100/10Mbps Ethernet IOA

    IBM 4838 PCI 100/10Mbps Ethernet IOA

    IBM 4838 PCI 100/10Mbps Ethernet IOA 1 Port 100Mbps Ethernet  IBM 4838 attaches the AS/400 to 100Mbps high-speed Ethernet LANs and/or existing 10Mbps Ethernet LANs. The adapter comes with an RJ45 connector for attachment to UTP-5 media...

    $75.00
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  • IBM 2619 Token-Ring Adapter 85F9089

    IBM 9406 2619 Token-Ring Adapter 2619 85F9089

    The IBM 2619 16/4Mbps HP Token-Ring Network Adapter (Part Number: 85F9089) is a high-performance solution for IBM AS/400 systems. This adapter ensures reliable server network connectivity for enterprises. Technical Specifications Part...

    $100.00
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