24-port SFP Layer 3 Stackable Managed Gigabit Switch incl. 4-port Combo 1000BaseT/SFP plus 4 10GE SFP+- Including 4 built-in Combo 1000BaseT SFP+ ports- 4 10GE SFP+, 80Gbps physical stacking bandwidth- Switching Capacity 128 Gbps- Packet Forwarding Rate 95.24 Mpps- Up to 9 units per stack with other DGS-3630 series switches- Up to 32 units per Virtual Stacking/Clustering (Single IP Management) up to 20Gbps stacking bandwidth- IEEE 802.3ah Ethernet First Mile(EFM), IEEE 802.1ag/ITU-T Y.1731 OAM- MTBF 280,612.09 hours- Weight 3.78kg- Dimensions 441x259x44mm* EI Enhanced Image features Super VLAN, L3 Routing and L3 Multicast*MI MPLS Image features L3 Routing and MPLSSee datasheet for more information. www.dlink.com* available by firmware image upgrade purchase option