The SELX1C1Z is a Sun‑branded CPU board module that houses two SPARC64 VII processors, each operating at 2.53 GHz. Designed specifically for integration into Sun SPARC M4000 servers, this board provides a direct upgrade path for systems requiring additional processing power while maintaining full compatibility with the M4000 architecture. The module complies with RoHS regulations, ensuring it meets environmental standards for hazardous substances. Identified by the part number SELX1C1Z, it is suited for enterprise environments where reliable, high‑performance SPARC computing is essential, and it can be installed as a drop‑in replacement or enhancement within the supported server chassis.