SynOptics 3308A 10-Base-T Host Module Ethernet Network Card

SynOptics 3308A 10-Base-T Host Module Ethernet Network Card

The SynOptics 3308A is a legacy 10-Base-T Ethernet network module designed for older computing and networking systems that use standard 10 Mbps twisted-pair Ethernet connectivity. This module provides a host adapter interface for connecting classic computer systems and network devices to 10-Base-T Ethernet networks via RJ-45 connectors. It was a common component in 1980s and early 1990s networking infrastructure when 10Base-T was the dominant Ethernet standard for local area networks.

Specifications & What's Included

• Model: SynOptics 3308A
• Standard: 10-Base-T Ethernet (IEEE 802.3)
• Data Rate: 10 Mbps
• Interface: RJ-45 connector
• Type: Host Module / Network Adapter Card
• Era: 1980s–1990s legacy networking equipment

Applications

The SynOptics 3308A was widely used in legacy computer networks, data centers, and office environments during the era when 10-Base-T Ethernet dominated local area networks. These modules are commonly sought by vintage computer enthusiasts, network historians, and professionals restoring classic networking systems or maintaining legacy infrastructure. The 10-Base-T standard remained in use for many decades and continues to appear in educational environments, research labs, and specialized industrial control systems where older, proven networking technology is preferred or required for compatibility. Today, this module is most valuable for system restoration projects, nostalgic computing labs, and as a reference example of early Ethernet network design.