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System SpecificationsDescriptionI/O ports and slots

• 48 RJ-45 autosensing 10/100/1000 PoE+ ports (IEEE 802.3 type 10BASE-T, IEEE 802.3u type 100BASE-TX, IEEE 802.3ab type 1000BASE-T, IEEE 802.3at PoE+)

• Media type: Auto-MDIX

• Duplex: 10BASE-T/100BASE-TX: Half or full

• 1000BASE-T: Full only

• 4 fixed GbE SFP ports

Additional ports and slots1 Dual-Personality (RJ-45 or USB Micro-B) serial console portMemory and processor

• ARM9E @ 800 MHz, 128MB flash

• Packet buffer size: 3MB dynamically allocated, 256MB DDR3 DIMM

Mounting

• Mounts in an EIA-Standard 19 in telco rack or equipment cabinet (Rack-Mounting kit available)

• Horizontal surface mounting

• Wall mounting

Management

• IMC

• CLI

• Web browser

• Configuration menu

• Out-of-Band management (Serial RS-232C or Micro-USB)

• IEEE 802.3 Ethernet MIB

• Repeater MIB

• Ethernet interface MIB

Performance (IPv6 Ready Certified)Description1000Mb latency< 2.3 µs (LIFO 64-byte packets)100Mb latency< 7.4 µs (LIFO 64-byte packets)ThroughputUp to 77.3 million p/s (64-byte packets)Switching capacity104 Gb/sMAC address table size16000 entriesPhysical SpecificationsDescriptionDimensions (H x W x D)

• 4.45 x 44.3 x 32.26 cm (1.75 x 17.44 x 13.00 in)

• 1U height

Weight4.72 kg (10.4 lb)Electrical SpecificationsDescriptionMaximum heat dissipation236 BTU/hr (248.98 kJ/hr), (Switch only: 236 BTU/hr; combined switch + maximum PoE devices: 1624 BTU/hr)Voltage100 - 127 / 200 - 240 V acCurrent5.8/2.9 AIdle power140.1 WMaximum power rating2476 WPoE power382 WFrequency50/60 HzNOTE:

1. Idle power is the actual power consumption of the device with no ports connected
2. Maximum power rating and maximum heat dissipation are the Worst-Case theoretical maximum numbers provided for planning the infrastructure with fully loaded PoE (If equipped), 100% traffic, all ports plugged in, and all modules populated. PoE is the total power budget available to all PoE ports

Environmental SpecificationsDescriptionOperating temperature0° to 45°C (32° to 113°F)Operating relative humidity15% to 95% @ 40°C (104°F), noncondensingNon-Operating/storage temperature(-40°) to 70°C ((-40°) to 158°F)Non-Operating/storage relative humidity15% to 90% @ 65°C (149°F), noncondensingAltitudeUp to 3 km (10,000 ft)AcousticPower: 33.6 dB, pressure: 43.9 dBSafety CertificationsDescriptionSafety

• UL 60950-1

• CAN/CSA 22.2 No. 60950-1

• EN 60825

• IEC 60950-1

• EN 60950-1

Emissions

• FCC Class A

• EN 55022/CISPR-22 Class A

• VCCI Class A

Immunity

• Generic:EN 55024, CISPR 24

• EN:EN 55024, CISPR 24

• ESD:IEC 61000-4-2

• Radiated:IEC 61000-4-3

• EFT/Burst IEC:61000-4-4

• Surge:IEC 61000-4-5

• Conducted:IEC 61000-4-6

• Power frequency magnetic field:IEC 61000-4-8

• Voltage dips and interruptions:IEC 61000-4-11

• Harmonics:EN 61000-3-2, IEC 61000-3-2

• Flicker:EN 61000-3-3, IEC 61000-3-3

NOTE:

• IEEE 802.3az applies to Gb models only
• IEEE 802.3at and IEEE 802.3af apply to PoE+ models only
• When using SFPs with this product, SFPs with revisionBor later (Product number ends with the letterBor later, e.g., J4858B, J4859C) are required