Bay Networks 3308B 10-Base-T Host Module Ethernet Network Card

Bay Networks 3308B 10-Base-T Host Module Ethernet Network Card

The Bay Networks 3308B is a 10-Base-T Ethernet host module designed for legacy network systems and computing environments. This network interface card (NIC) connects systems to standard 10 Mbps Ethernet networks using RJ-45 connectors, supporting traditional twisted-pair cabling and hub-based network topologies that were standard in corporate and institutional environments throughout the 1990s and early 2000s.

Specifications & What's Included

• Manufacturer: Bay Networks
• Model: 3308B
• Type: 10-Base-T Ethernet Host Module / Network Interface Card
• Data Rate: 10 Mbps
• Interface: 10-Base-T (IEEE 802.3)
• Connector: RJ-45
• Form Factor: Plug-in host module / card
• Cabling: Standard twisted-pair Ethernet cable (Category 3 or higher)

Applications

The 3308B host module was widely deployed in legacy business networks, laboratory systems, and industrial control environments where 10 Mbps Ethernet connectivity was the standard. Bay Networks (later acquired by Nortel) was a major supplier of networking equipment during this era, and host modules like the 3308B were used to add network connectivity to systems and terminals that required basic Ethernet access. These modules remain useful in vintage computing restoration, legacy system maintenance, and retro network setups where original-era components are preferred or required. The 10-Base-T standard is still supported by many modern network switches and hubs for backward compatibility, making this card viable for connecting older systems to contemporary infrastructure.