Hi-R CSG300-20 (Cisco SG300-20 20-port Gigabit Managed Switch)

Router-Switch
Cisco Small Business 300 Series Managed Switches
Model: SG-300-20
20 port Gigabit Managed Switch 
Cisco SG300-20 Switches deliver the ideal combination of price, performance, and capabilities in a solution designed specifically for small businesses. This broad portfolio of affordable, managed switches provide a powerful foundation to support your business network.
Description:
Minimum Operating Temperature:    32 F
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)
MTBF:    144,237 hour(s)
Voltage Required:    AC 120/230 V ( 50/60 Hz )
Depth:    8 inches
Maxiumum Storage Temperature:    158 F
Device Type:    Switch – 20 ports – L3 – managed
Maximum Operating Temperature:    104 F
Power Over Ethernet (PoE):    n/a
Weight:    4.8 lbs
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: 40 Gbps; Forwarding performance (64-byte packet size): 29.76 Mpps
Cables Included:    1x Serial Cable
Jumbo Frame Support:    10 KB
Authentication Method:    Secure Shell (SSH), RADIUS, TACACS+
Flash Memory:    16 MB
Height:    1.5 inches
Localization:    Chinese (simplified), English, German, French, Italian, Spanish, Japanese
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 adapter – external
Humidity Storage Range:    10-90% (non-condensing)
Enclosure Type:    Desktop, rack-mountable – 1U
Capacity:    4K Active VLANs
Ports:    18 x 10/100/1000 + 2 x combo Gigabit SFP