H3C S6520X Series Switches (EI / HI / SI): 10GE Access & Aggregation Switch Lineup Guide for 2026
Executive takeaways
If you need dense 10G fiber access with 100G uplinks (and room to grow with interface modules), start with S6520X-30HC-EI / S6520X-54HC-EI: they ship with QSFP28 100G uplinks that can break out to 4×25G.
If 40G uplinks are enough today (or you plan to break out ...