"48-Port 10/100Mbps + 2x 1000BaseT 2x 1000BaseT/SFP L2 Managed Switch " with POEPORTS : 48 x 10/100BASE-TX Ports ; 2 x 10/100/1000BASE-T Ports2 x Combo 10/100/1000BASE-T/SFP ; 1 x RS-232 Console Port802.3af PoE Support Per 10/100BASE-TX PortSWITCH CAPACITY: 17.6Gbps64-BYTE PACKET FORWARDING RATE: 13.1MppsMAC ADDRESS TABLE SIZE : 8kSDRAM FOR CPU : 64MBPACKET BUFFER: 512KBFLASH MEMORY : 8 MBJUMBO FRAME (2048 Bytes Tagged, 2044 Bytes Un-Tagged)POWER INPUT : 100 to 240 VAC, 50 to 60 Hz Internal Universal Power SupplyDIMENSIONS : 441 (W) x 207 (D) x 44 (H) mm;19-Inch Standard Rack-Mount Width, 1U HeightMTBF : 292,133 Hours* Security Port Security, ACL,802.1X Port-Based/MAC-Based Access Control802.1X Guest VLAN, Traffic Segmentation, 4K VLAN Groups,CPU Interface Filtering, D-Link Safeguard Engine* Traffic Monitoring/Bandwidth, Control, Port Mirroring,Granular BandwidthControl (Down to 64Kbps Per Port), Broadcast Storm Control* Resiliency/Performance