The ProCurve Switch 6400cl series switches are 6-port 10GbE stackables with optional 10GbE add-on modules. Loaded with full Layer 3 features, the 6400cl series switches offer low-cost 10GbE for small high-performance aggregation of clusters of Gigabit switches. Ideal for consolidating multiple wiring closets, the 6400 series offers the highest bandwidth on the market today for Gigabit. The flexibility of the ProCurve Switch 6400cl series also provides fiber flexibility to connect remote campuses up to 40 km away.