The HP D6740-63001 is a Pentium II Xeon single-core processor operating at 400MHz with a 100MHz front-side bus and 512KB L2 cache. It uses the Slot 2 socket interface, compatible with high-end workstations and entry-level servers from the late 1990s era, particularly HP ProLiant and Compaq systems. This processor is suited for legacy system restoration, archival server maintenance, or specialized industrial applications requiring period-appropriate hardware. The refurbished unit has been tested and guaranteed, available via quote from G5 Network Group.