Cisco SG300-28 28-Port Gigabit SFP Operating Temperature: 32 F Interfaces: 28 x 10Base-T/100Base-TX/1000Base-T - RJ-45; 1 x console - 9 pin D-Sub (DB-9) - management; 2 x SFP (mini-GBIC) MTBF: 179,141 hour(s) Voltage Required: AC 120/230 V ( 50/60 Hz ) Depth: 10.1 inches Maxiumum Storage Temperature: 158 F Device Type: Switch - 28 ports - L3 - managed Maximum Operating Temperature: 104 F Power Over Ethernet (PoE): n/a Weight: n/a Humidity Operating Range: 10-90% (non-condensing) Rack-Mount 23 in. (58.4 cm) EIA: Included Routing Protocol: Static IPv4 routing Width: 17.3 inches Performance: Switching capacity: 56 Gbps; Forwarding performance (64-byte packet size): 41.67 Mpps Cables Included: 1x Serial Cable Jumbo Frame Support: 10 KB Authentication Method: Secure Shell (SSH), RADIUS, TACACS+ Flash Memory: 16 MB Height: 1.7 inches Localization: North America Ram: 128 MB Minimum Storage Temperature: -4 F Status Indicators: Link activity, port transmission speed, system MAC Address Table Size: 16k entries Power Device: Power supply - internal Humidity Storage Range: 10-90% (non-condensing) Enclosure Type: Desktop, rack-mountable - 1U Capacity: 4K Active VLANs Ports: 26 x 10/100/1000 + 2 x combo Gigabit SFP