The IBM A87101-001 is a PCI-X network interface adapter designed for enterprise systems requiring reliable Ethernet connectivity. Part number A87101-001, this card operates at PCI-X 133MHz bus speeds and delivers 133 Mbit/s throughput, making it suitable for moderate-bandwidth server and workstation deployments in legacy and mixed-generation environments. The adapter features standard PCI-X form factor compatibility with systems supporting 32-bit or 64-bit PCI-X slots. Typical use cases include network connectivity for refurbished or vintage IBM servers, storage systems, and data center equipment where cost-effective expansion or replacement of failed NICs is required. This refurbished unit has been tested and is guaranteed to be fully functional; available via quote.