Ruijie’s RG-S6500 Switch Series is a high-speed, high-density, 25 or 100 Gigabit Ethernet switch designed to power next-generation data centers and cloud computing services. RG-S6500 series includes RG-S6510-48VS8CQ and RG-S6520-64CQ right now. Both two models provide a strong cache capacity and support advanced cache scheduling mechanism and many features for RDMA lossless data center network. RG-S6510-48VS4CQ has 48 ports 25 Gigabit Ethernet SFP28, 8 ports 100 Gigabit Ethernet QSFP+ and RG-S6520-64CQ has 64 ports 100 Gigabit Ethernet QSFP+. Each QSFP+ can operate at 100 or 40 Gigabit Ethernet.