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Cisco · QSFP+ · 40G

QSFP-40G-SR4=

40GBASE-SR4 QSFP+ transceiver, 850 nm, multimode, MPO-12

  • Genuine Cisco
  • New, factory sealed

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  • Tax invoiceIssued by Rabash Technologies Pte. Ltd., Singapore

QSFP-40G-SR4= at a glance

  • 40GBASE-SR4 QSFP+ transceiver
  • 850 nm over multimode fibre (MMF)
  • Reach: 30 m on OM2 · 100 m on OM3 · 150 m on OM4/OM5
  • Connector: MPO-12
  • Digital optical monitoring (DOM) for light levels and temperature
  • Commercial temperature rating (typically 0 to 70 °C)
  • Genuine Cisco part, new, factory sealed

Specifications

Part numberQSFP-40G-SR4=
BrandCisco
Standard40GBASE-SR4
Form factorQSFP+
Data rate40 Gb/s
Wavelength850 nm
MediaMultimode fibre (MMF)
Reach30 m on OM2 · 100 m on OM3 · 150 m on OM4/OM5
ConnectorMPO-12
Digital optical monitoringSupported
Temperature rangeCommercial (COM)
ConditionNew, factory sealed

Description

A 40 gigabit QSFP+ module for short multimode links. It sends four parallel 10G lanes at 850 nm over a 12-fibre MPO/MTP connection, so it needs a parallel multimode trunk rather than a duplex patch cord. Cisco lists reach as 30 m on OM2, 100 m on OM3 and 150 m on OM4 or OM5. Of the SR4 modules in this family it is the version Cisco documents for 4x10G breakout use, where one 40G port is split into four 10G links through a suitable MPO-to-LC fan-out. Typical placements are server-to-top-of-rack runs and leaf-to-spine links inside one data hall, where fibre is already installed as MPO trunks. Maximum power draw is given as 1.5 W, with a commercial 0 to 70 degC operating range and a beige pull tab. Check the host platform and software release in the Cisco compatibility matrix before ordering.

Typical uses

  • Server and storage links to a top-of-rack switch
  • Switch-to-switch links inside one data hall or comms room
  • Building risers that already have OM3/OM4 multimode fibre

Before you order

  1. Confirm your switch or router model and software release support the QSFP-40G-SR4=
  2. Use OM3 or OM4 multimode patch cords; reach drops sharply on OM1/OM2
  3. Parallel optics need MPO/MTP trunk or breakout cabling with the right polarity
  4. Prices exclude import duties and taxes in your country (DAP)

FAQ

What is the reach of the QSFP-40G-SR4=?

30 m on OM2 · 100 m on OM3 · 150 m on OM4/OM5.

What fibre does the QSFP-40G-SR4= use?

It runs over multimode fibre (MMF) with a MPO-12 connector at 850 nm.

Is the QSFP-40G-SR4= genuine and what condition is it?

It is a genuine Cisco part, new, factory sealed, sold by an independent reseller and invoiced by Rabash Technologies Pte. Ltd., Singapore.

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