The TS100-E9-PI4 supports up to six expansion slots. It provides industrial leading PCI Express 3.0 x16 and x8 slots and one MIO port support. Besides the latest PCI-E technology, TS100-E9-PI4 keeps the legacy PCI slots on board which can fulfill various customers' requirements. Customers can move their existing legacy PCI add-on cards to TS100-E9-PI4, and still benefit from up-to-date Intel Xeon E3-1200 v5 Processor Family and DDR4 memory technology to their solutions.