Intel S82557 PCI 10/100 Ethernet NIC RJ-45 HP Compaq 645345-001 667200-003

Intel S82557 PCI 10/100 Ethernet NIC RJ-45 HP Compaq 645345-001 667200-003

The Intel S82557 is a PCI bus 10/100 Mbps Ethernet network interface card built around Intel's 82557 Fast Ethernet controller. It provides a single RJ-45 port for connecting to 10BASE-T or 100BASE-TX networks and uses a standard full-height PCI card form factor. This card was widely supplied as an OEM component in HP and Compaq desktop and workstation systems throughout the mid-to-late 1990s and carries multiple HP/Compaq part numbers.

Specifications & What's Included

• Network Chipset: Intel S82557 (stepping SL24Z, © 1989/1995)
• Bus Interface: PCI (full-height bracket)
• Data Rate: 10/100 Mbps (10BASE-T / 100BASE-TX)
• Port: 1x RJ-45
• Form Factor: Full-height PCI card
• OEM Part Number (HP/Compaq): 645345-001
• Also cross-references: 667200-003, 352509-003, 661949-004, 678400-001
• Card only — no cables, drivers disc, or documentation included

Applications

The Intel 82557 controller was one of the most common Fast Ethernet chipsets of the mid-to-late 1990s, found across a wide range of HP Vectra, Compaq Deskpro, and ProLiant systems, as well as many third-party desktop and workstation builds. Intel's 82557-based cards were supported natively in Windows 95/98/NT, Windows 2000, Linux, and later operating systems, making them straightforward to deploy in legacy PC builds and industrial systems that still rely on PCI-slot networking. Today these cards see use in vintage computing restoration, legacy industrial controllers, and any PCI-equipped system needing a simple, well-supported 10/100 NIC. Intel's own PRO/100 driver line — and open-source equivalents — continue to support the 82557 across many modern OS versions.