The LENOVO 00FK628 is a specialized PCIe riser card designed explicitly for the System x3650 M5 server, enabling expansion and flexibility by supporting additional PCIe cards. This riser includes one full-height/full-length (FH/FL) x16 slot and one full-height/half-length (FH/HL) x8 slot, allowing for a wide array of expansion cards such as network adapters, storage controllers, or GPU cards, enhancing the server's capabilities. It is engineered to optimize airflow and maintain system stability, even when fully loaded with PCIe cards. The LENOVO 00FK628 riser card is an essential component for businesses looking to maximize their server's potential, offering a cost-effective way to expand functionality without the need for immediate server upgrades.