SG300-20
 Model: SG300-20 – Cisco Small Business 300 Series Managed Switches 
 Details: 18 10/100/1000 ports, 2 combo mini-GBIC ports 
 Condition: New Factory Sealed 
 Warranty: 3 Years Warranty.
SG300-20 Overview
 Quick Specs Figure 1 shows the appearance of SG300-20.
  
 
Table 1 shows the Quick Specs. 
| Product Number | SG300-20 | 
| Product Description | 18 10/100/1000 ports, 2 combo mini-GBIC ports | 
| Device Type | Switch – 20 ports – L3 – managed | 
| Enclosure Type | Desktop, rack-mountable – 1U | 
| Ports | 18 x 10/100/1000 + 2 x combo Gigabit SFP | 
| Power Over Ethernet (PoE) | N/A | 
| Performance | Switching capacity : 40 Gbps ¦ Forwarding performance (64-byte packet size) : 29.76 Mpps | 
| MAC Address Table Size | 16K entries | 
| Capacity | 4K Active VLANs | 
| Routing Protocol | Static IPv4 routing | 
| Remote Management Protocol | SNMP 1, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c, HTTP, HTTPS, SSH, CLI | 
| Jumbo Frame Support | 10KB | 
| Authentication Method | Secure Shell (SSH), RADIUS, TACACS+ | 
| Features | Layer 3 switching, layer 2 switching, DHCP support, BOOTP support, VLAN support, IGMP snooping, Syslog support,DoS attack prevention, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control,IPv6 support, Multicast Storm Control, Unicast Storm Control, firmware upgradable, Spanning Tree Protocol (STP) support,Rapid Spanning Tree Protocol (RSTP) support, Multiple Spanning Tree Protocol (MSTP) support, Trivial File Transfer Protocol (TFTP)support, Access Control List (ACL) support, Quality of Service (QoS), Jumbo Frames support, MLD snooping, fanless | 
| Compliant Standards | UL 60950, FCC Part 15 A, CSA 22.2 | 
| RAM | 128Â MB | 
| Flash Memory | 16 MB flash | 
| Status Indicators | Link activity, port transmission speed, system | 
| Interfaces | 20 x 10Base-T/100Base-TX/1000Base-T – RJ-45 ¦ 1 x console – 9 pin D-Sub (DB-9) – management ¦ 2 x SFP (mini-GBIC) | 
| Power Device | Power adapter – external | 
| Voltage Required | AC 120/230 V ( 50/60 Hz ) | 
| Width | 17.3Â in | 
| Depth | 8Â in | 
| Height | 1.5Â in | 
| Weight | 4.8Â lbs | 
| Cables Included | 1 x serial cable | 
| Rack Mounting Kit | Included | 
| MTBF | 144,237Â hour(s) | 
| Localization | Chinese (simplified), English, German, French, Italian, Spanish, Japanese | 
| Service & Support | Limited lifetime warranty | 
| Service & Support Details | Limited warranty – replacement – lifetime – response time: next business day ¦ Technical support – web support – 1 year ¦ Technical support – phone consulting – 1 year | 
| Min Operating Temperature | 32 °F | 
| Max Operating Temperature | 104 °F | 
| Humidity Range Operating | 10 – 90% (non-condensing) | 
| Min Storage Temperature | -4 °F | 
| Max Storage Temperature | 158 °F | 
| Humidity Range Storage | 10 – 90% (non-condensing) | 
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