The Intel Pentium II 400MHz CPU is a vintage computer component featuring a Slot 1 socket type and a 512KB L2 cache size. With a processor model of SL2S7 and a bus speed of 400 MHz, this unit offers reliable performance for computing tasks. This CPU, part of the Pentium II series by Intel, is a valuable addition for collectors or enthusiasts looking to upgrade their vintage computer systems with a trustworthy and capable processor.