IBM 01K2600 Pentium II 266MHz processor for legacy desktop and workstation systems. Single-core architecture with 66 MHz front-side bus, 512 KB L2 cache, and Socket 370 pinout. Suitable for Windows 9x/ME/2000 and early Linux distributions in education, light office, or retro-computing environments where 266 MHz single-threaded performance meets application requirements. Compatible with Intel-based chipsets from the late 1990s era. This refurbished unit has been tested and guaranteed; available via quote from G5 Network Group.