20-Port 10G SFP+ and 4-port 10GBASE-T/SFP+ Combo Port??- Layer 3 Stackable Managed Switch- Fast performance with up to 480 Gbps switching capacity- 48K MAC address table- Front Back airflow direction- Two slots for AC/DC hot-swappable power modules support 1+1 power redundancyand load sharing. Only 1 PSU supplied.- Access Control List- Port Security- Traffic Segmentation- Broadcast/Multicast/Unicast- See Datasheet for additional information- 19-inch rackmount size