IBM C0BC Module – Part Numbers 03FM559 & 03FM558 (Feature Code COBC) Brand NewThis is a genuine IBM C0BC FRU (Field Replaceable Unit) module, originally manufactured in November 2020. It is a high-performance I/O adapter designed for IBM Z mainframe systems (z15 / z16 and compatible platforms).Key Specifications:
Feature Code: C0BC (COBC)Part Numbers: 03FM559 (PN) / 03FM558 (CA – Card Assembly)Engineering Change (EC): H07037Manufacture Date: 2020-11-09Origin: Made in ChinaMAC Address: AC620D09A118Form Factor: Hot-swap module with blue ejector handles for easy installation in IBM Z I/O drawers
Physical & Interface Details:
Front faceplate labeled COBC and FRUPort/LED labeling: A1, A2, B1, B2, D1, D2High-density rear connectors for power and signalRobust metal construction with guide rails for secure chassis mounting
This module provides Gigabit Ethernet LX (Long Wavelength fiber) connectivity (or related high-speed Ethernet variant depending on EC level) and is commonly used for host networking, clustering, or high-reliability data transfer in enterprise IBM Z environments.
These units are brand new and sealed in the original case pack from the factory. Have never been used. Multiple units available.