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IBM 74F4149 1 x Port DB-9 16/4 Token Ring Micro Channel Adapter
- IBM Token Ring Network Adapter
- MicroChannel interface
- Single DB-9 port
- Supports 16/4 Mbps speeds
- Designed for IBM PS/2 and compatible systems
- Provides legacy network connectivity
- Reliable data transmission for Token Ring LANs
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Product Overview
The IBM 74F4149 is a Token Ring Micro Channel Adapter featuring a single DB-9 port. It supports 16/4 Mbps speeds and is designed for legacy IBM systems with MicroChannel architecture.
Technical Information
| Interface | MicroChannel |
| Network Type | Token Ring |
| Speed | 16/4 Mbps |
Additional Specifications
| Port | 1 x DB-9 |
| Manufacturer | IBM |
Product Description
The IBM 74F4149 is a specialized network adapter card designed to provide Token Ring connectivity for IBM computers equipped with the MicroChannel architecture (MCA). This adapter features a single DB-9 connector, which was a common physical interface for Token Ring networks, allowing it to interface with the network cabling infrastructure. It supports the dual-speed capabilities of Token Ring, operating at both 16 Mbps and 4 Mbps, enabling compatibility with various network configurations and ensuring flexibility in deployment. This card is intended for use in IBM's PS/2 line of computers and other systems that utilized the proprietary MicroChannel bus. The MCA was IBM's advanced expansion bus technology of its time, offering higher bandwidth and more sophisticated features compared to the ISA bus. The 74F4149 leverages this interface to deliver reliable network performance for legacy systems. As a Token Ring adapter, its primary function is to enable communication within a Token Ring local area network (LAN). Token Ring was known for its deterministic access method, which provided predictable performance, making it a popular choice for business-critical applications in the past. The IBM 74F4149 represents a key component for maintaining or establishing network connectivity in environments that relied on this technology and IBM's MCA platform.
