Tyan S5151 Tomcat i945PL Intel LGA775 ATX Server Motherboard DDR2 Dual GbE

Tyan S5151 Tomcat i945PL Intel LGA775 ATX Server Motherboard DDR2 Dual GbE

The Tyan S5151, part of the Tomcat i945PL series, is an ATX form-factor server and workstation motherboard built on Intel's 945PL chipset with an LGA775 (Socket T) CPU socket. It supports Intel Pentium 4, Pentium D, and Core 2 Duo/Quad processors, making it a solid platform for entry-level servers, workstations, and legacy system builds. Tyan designed the S5151 in the USA and it carries both FCC and CE certification.

Specifications & What's Included

• Manufacturer: Tyan
• Model: S5151 (Tomcat i945PL series)
• Form Factor: ATX
• CPU Socket: LGA775 (Socket T)
• Compatible Processors: Intel Pentium 4, Pentium D, Core 2 Duo, Core 2 Quad
• Chipset: Intel 945PL
• Memory: 4x DDR2 DIMM slots (blue)
• Expansion: 1x PCIe x16, 2x PCI
• Storage: 6x SATA ports
• LAN: 2x Gigabit Ethernet (dual RJ45 rear ports)
• Rear I/O: 2x PS/2 (keyboard/mouse), 2x USB 2.0, DB9 serial, VGA (D-Sub 15-pin), 2x RJ45 GbE
• Internal headers: USB 2.0 headers, floppy connector, IDE header
• Certifications: FCC, CE — Designed in USA
• Included: Motherboard only — no CPU, RAM, cables, or I/O bracket

Applications

The Tyan S5151 Tomcat i945PL was aimed at the entry-level server and single-socket workstation market in the mid-2000s. LGA775 boards like the S5151 supported the transition from Pentium 4/D to the then-new Core 2 architecture (released 2006), making them useful for small business file servers, network appliances, and developer workstations of that era. Today, S5151 boards are sought by system builders maintaining legacy LGA775-based servers, hobbyists running period-correct Intel platforms, and anyone needing a reliable ATX board with dual onboard Gigabit LAN. The dual GbE ports made the S5151 particularly attractive for light NAS or router builds where a second network interface was needed without an add-in card.