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IBM 85H4490 Turboways 25 ATM RJ-45 PCI Card
- IBM Turboways 25 ATM PCI Card
- RJ-45 connector for Ethernet interface
- Supports Asynchronous Transfer Mode (ATM) networking
- Enables high-speed data communication
- Designed for PCI bus architecture
- Facilitates integration with ATM networks
- Part number 85H4490
- Used in compatible IBM servers/workstations
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Product Overview
The IBM 85H4490 is a Turboways 25 ATM PCI Card with an RJ-45 connector. This card enables Asynchronous Transfer Mode (ATM) networking capabilities over Ethernet interfaces for compatible IBM systems.
Technical Information
| Part Number | 85H4490 |
| Product Type | ATM PCI Network Card |
| Technology | Asynchronous Transfer Mode (ATM) |
| Speed | 25 Mbps (Turboways 25) |
Additional Specifications
| Connector | RJ-45 |
| Interface | PCI |
| Brand | IBM |
Product Description
The IBM 85H4490 is a network interface card that provides Asynchronous Transfer Mode (ATM) connectivity to compatible IBM computer systems. This specific model, part of the Turboways 25 series, operates at a speed of 25 Mbps, which was considered high-speed for ATM networking during its era. The card utilizes the Peripheral Component Interconnect (PCI) bus for integration into the system's motherboard, allowing it to communicate with the host processor. The inclusion of an RJ-45 connector indicates that this card interfaces with standard Ethernet cabling infrastructure, bridging ATM network protocols with Ethernet physical layers. This was a common approach for deploying ATM in environments that already had Ethernet cabling in place, offering a pathway to leverage the benefits of ATM's cell-based switching and quality of service (QoS) features over existing networks. This PCI card was designed for applications requiring reliable, high-bandwidth, and low-latency data transmission, such as early broadband services, high-speed data backbones, or specialized telecommunications applications. As an IBM-branded component, it was engineered to meet the reliability and performance standards expected for enterprise-level deployments within the IBM ecosystem.
