S1720-28GFR-4P 98010848 (24 Ethernet 10/100/1000 Ports,4 Gig SFP,AC Power Support) 24 Port Gigabit sfp Switch

Wide [mm]

442.0 mm

Depth [mm]

224.8 mm

Height [mm]

43.6 mm

Chassis height [U]

1

Weight with packaging [kg(lb)]

3.9

Typical power consumption [W]

16.1

Maximum power consumption [W]

20.2

Typical heat dissipation [BTU/hour]

54.93

Maximum heat dissipation [BTU/hour]

68.92

Heat dissipation mode

Natural heat dissipation without fans

Power supply mode

AC built-in

Rated input voltage [V]

100 V AC to 240 V AC, 50/60 Hz

Input voltage range [V]

90 V AC to 264 V AC, 47 Hz to 63 Hz

Maximum input current [A]

0.8 A

Number of card slots

0

Number of power slots

0

Memory

512 MB

Flash memory

512 MB in total. To view the available flash memory size, run the display version command.

Redundant power supply

Not supported

Types of fans

None

Noise at normal temperature (acoustic pressure) [dB(A)]

Noise-free (no fans)

Noise at normal temperature (acoustic power) [dB(A)]

Noise-free (no fans)

Airflow direction

-

Long-term operating temperature [°C(°F)]

0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (0-5906 ft.)

Short-term operating temperature [°C(°F)]

-5°C to +50°C (23°F to 122°F) at an altitude of 0-1800 m (0-5906 ft.)

Storage temperature [°C(°F)]

-40°C to +70°C (-40°F to +158°F)

Restriction on the operating temperature variation rate

When the altitude is 1800-5000 m (5906-16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (722 ft.). The operating temperature of the switch is 0°C to 40°C (32°F to 104°F) when it uses GE SFP optical modules with 40 km transmission distance. The equipment can operate beyond the normal operating temperature range for a short-term period, but the following conditions must be met: - The equipment operates at a temperature of over 45°C (113°F) consecutively for at most 96 hours in one year. - The equipment operates at a temperature of over 45°C (113°F) for a total of no more than 360 hours in one year. - The equipment operates at a temperature of over 45°C (113°F) for no more in 15 times in one year. The equipment may be damaged or experience unexpected exceptions if any of the preceding limits is exceeded. The equipment cannot start when the temperature is lower than 0°C (32°F). The maximum distance of optical modules used in these conditions cannot exceed 10 km.

Long-term operating relative humidity [RH]

5% to 95%, noncondensing

Long-term operating altitude [m(ft.)]

0-5000 m (0-16404 ft.)

Storage altitude [m(ft.)]

0-5000 m (0-16404 ft.)

MTBF [year]

45

MTTR [hour]

2

Availability

>0.99999

1000M electrical interface

24

1000M optical interface

4

USB

Not supported

Console port

Not supported

Eth Management port

Not supported

Service port surge protection

Common mode: ±7 kV

Power supply surge protection

±6 kV in differential mode, ±6 kV in common mode

RPS input

Not supported

PoE

Not supported