Bay Networks 5525 TR Switch Host Centillion 5000 Token Ring Module 960-426-BRB0

Bay Networks 5525 TR Switch Host Centillion 5000 Token Ring Module 960-426-BRB0

The Bay Networks 5525 TR Switch Host is an 8-port Token Ring switching module designed for the Centillion 5000 chassis. It provides dedicated Token Ring switching for up to 8 ring connections with per-port 4 Mbps and 16 Mbps speed support, as indicated by the Port Status LED matrix on the faceplate. The front panel also includes Ring Connect indicators (R1–R8) for monitoring ring status in real time.

Specifications & What's Included

• Manufacturer: Bay Networks
• Model: 5525 TR Switch Host
• Part Number: 960-426-BRB0
• Secondary Label: SCHSEG002074
• Date Code: 9735 (manufactured week 35, 1997)
• Compatible Chassis: Bay Networks Centillion 5000
• Network Technology: Token Ring (TR)
• Number of Ports: 8
• Port Speeds: 4 Mbps / 16 Mbps per port (switchable, per faceplate labels)
• Faceplate: Ring Connect status indicators (R1–R8) and per-port Port Status LEDs
• Form Factor: Chassis module / card
• Notable IC: CSI CAT28C64B EEPROM visible on PCB
• Includes: Module only — no chassis, no Bay Networks Centillion 5000 was a high-density, chassis-based switching platform from the mid-to-late 1990s, aimed at enterprise campus networks that relied on Token Ring infrastructure. Token Ring, standardized as IEEE 802.5, was widely deployed in corporate environments through the late 1980s and 1990s — particularly in IBM-centric shops running AS/400, mainframe, or PS/2-based networks — before Ethernet ultimately displaced it. The 5525 TR Switch Host module allowed organizations to collapse multiple Token Ring segments into a managed switching environment, improving throughput and manageability compared to older shared-ring hubs. Today this type of module is sought by network engineers maintaining legacy Token Ring infrastructure, historians and collectors of 1990s enterprise networking gear, and IT surplus buyers looking for compatible spares for existing Centillion 5000 chassis installations.
  Condition: Used
  This Bay Networks 5525 TR Switch Host module for the Centillion 5000 has been inspected and appears to be in good used condition. It was pulled from a working environment where it was previously in service. The PCB shows normal handling wear consistent with field use. The faceplate and LED label panel are intact and legible. No cracked components or obvious physical damage are visible on the board. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function. Visit Our Store

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