Data Sheet

Data Sheet
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 8 of 9
Ports
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ESW-520-24 and ESW-520-24P: 24 RJ-45 connectors for 10BASE-T/100BASE-TX; two
10BASE-T/100BASE-TX/1000BASE-T ports; 2 combo SFP slots
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ESW-520-48 and ESW-520-48P: 48 RJ-45 connectors for 10BASE-T/100BASE-TX; two
10BASE-T/100BASE-TX/1000BASE-T ports; 2 SFP slots
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ESW-540-24 and ESW-540-24P: 24 RJ-45 connectors for 10BASE-T/100BASE-
TX/1000BASE-T with 4 Gigabit combo SFP slots
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ESW-540-48: 48 RJ-45 connectors for 10BASE-T/100BASE-TX/1000BASE-T with 4
combo Gigabit SFP slots
All units: Console port; automatic medium dependent interface (MDI) and MDI crossover (MDI-
X); auto negotiate/manual setting; port for connecting to redundant power supply unit
Buttons Reset button
Cabling type Unshielded twisted pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; 1000BASE-T
Recommended
LEDs Power, Fan, Link/Activity, PoE, Speed, Redundent Power Supply
Standards
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802.3 10BASE-T Ethernet
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802.3u 100BASE-TX Fast Ethernet
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802.3ab 1000BASE-T Gigabit Ethernet
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802.3z Gigabit Ethernet
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802.3x flow control
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802.3ad LACP
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802.3af PoE
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802.1D Spanning Tree Protocol (STP)
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802.1Q/p VLAN
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802.1w Rapid STP
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802.1s Multiple STP
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802.1X port access authentication
Environmental
Dimensions
W x D x H
17.32 x 14.70 x 1.73 in.
(440 x 375 x 44 mm)
Unit weight
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Cisco ESW-520-24: 4.41
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Cisco ESW-520-48: 4.83
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Cisco ESW-520-24P: 4.91
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Cisco ESW-520-48P: 6.01
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Cisco ESW-540-24P: 5.72
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Cisco ESW-540-48: 4.91
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Cisco ESW-540-24: 4.77
Power 100–240V 47–63 Hz, internal, universal; also equipped with external redundant power supply
connector for external power supply, -48V DC
Certifications UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A
Operating temperature 32° to 104°F (0° to 40°C)
Storage temperature -4° to 158°F (-20° to 70°C)
Operating humidity 10% to 90%, relative, noncondensing
Storage humidity 10% to 95%, relative, noncondensing
Predicted mean time
between failures (MTBF)
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Cisco ESW-520-24: 927279.2 hours
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Cisco ESW-520-48: 575097.56 hours
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Cisco ESW520-24P: 425541.70 hours
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Cisco ESW-520-48P: 308826.25 hours
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Cisco ESW-540-24: 690073.07 hours
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Cisco ESW-540-48: 258492.52 hours
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Cisco ESW-540-24P: 371638.12 hours
Model Fan (number/speed) Under 35° Celsius
Cisco ESW-520-24 1/6000 rpm 40.6 dB
Cisco ESW-520-24P 2/9000 rpm 50 dB
Cisco ESW-540-24 2/6000 rpm 40.2 dB
Acoustic noise
Cisco ESW-540-48 3/9000 rpm 41.4 dB