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IBM 85H5987 Turbo 16/4 ISA Token Ring Network Adapter
- Token Ring Network Adapter
- Supports 16 Mbps and 4 Mbps speeds
- ISA bus interface
- Designed for IBM compatible PCs
- Legacy networking technology
- Reliable connectivity for Token Ring networks
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Product Overview
The IBM 85H5987 is a Turbo 16/4 ISA Token Ring Network Adapter. This adapter was used to connect computers to a Token Ring local area network, offering speeds of 16 Mbps or 4 Mbps. It utilizes the ISA bus interface, common in older PC architectures.
Technical Information
| Product Type | Network Adapter |
| Technology | Token Ring |
| Speed | 16/4 Mbps |
Additional Specifications
| Interface | ISA |
| Manufacturer | IBM |
| SKU | 85H5987 |
Product Description
The IBM 85H5987 Turbo 16/4 ISA Token Ring Network Adapter is a legacy networking component designed to provide connectivity to Token Ring LANs. Token Ring was a popular networking technology, particularly in IBM environments, known for its deterministic access method which ensured fair access to the network for all connected devices. This adapter supports both the higher-speed 16 Mbps and the standard 4 Mbps data rates. Featuring an Industry Standard Architecture (ISA) bus interface, this adapter is intended for installation in older personal computers and workstations that utilize the ISA slot. Its 'Turbo' designation suggests it may offer enhanced performance or features compared to standard Token Ring adapters of its era. The adapter would have been crucial for enabling communication between computers in offices and data centers that employed Token Ring topology. While Token Ring technology has largely been superseded by Ethernet, adapters like the IBM 85H5987 remain relevant for maintaining or restoring legacy systems. They are essential for organizations that still rely on older infrastructure or for archival and diagnostic purposes. The adapter requires specific drivers and network configurations to function within a Token Ring environment.
