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StarTech.com Cisco QSFP-40G-CSR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - MPO 300m - 850nm - DDM Cisco Firepower, ASR9000, ASR1000

1 offer · 1 shop · last checked 2026-10-29 06:11 (Europe/Vienna)

SFP transceiver type
Fiber optic
Maximum data transfer rate
40000 Mbit/s
Interface type
SFP+
Fiber optic connector
MPO
Product image: StarTech.com Cisco QSFP-40G-CSR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - MPO 300m - 850nm - DDM Cisco Firepower, ASR9000, ASR10001 / 4

Item price

EUR 56,31

Sold by Netzwerkartikel.de · QSFP-40G-CSR4-ST · New

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Observed item prices

Netzwerkartikel.de, one listing

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Observed prices over time

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EUR56,3129 Oct 2026
Lowest
Unchanged since 28 Oct 2026
Observed prices over time
DayLowestHighestLastChecks
29 Oct 2026EUR56,31EUR56,31EUR56,311
28 Oct 2026EUR56,31EUR56,31EUR56,311

About this product

StarTech.com Cisco QSFP-40G-CSR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - MPO 300m - 850nm - DDM Cisco Firepower, ASR9000, ASR1000, Fiber optic, 40000 Mbit/s, SFP+, MPO, SR4, 400 m

Read the full source description

40 Gbps | Multi Mode Fiber | MPO | 400 m (1312 ft.) | Lifetime Warranty

The QSFP-40G-CSR4-ST is a Cisco QSFP-40G-CSR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Arista Networks brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBASE-SR4 compliant networks, with a maximum distance of up to 400 m (1312 ft.).

Technical Specifications:

• Wavelength: 850nm • Maximum Data Transfer Rate: 40 Gbps • Type: Multi Mode • Connection Type: MPO • Maximum Transfer Distance: 400 m (1312 ft.) • MTBF: 95,832,027 hours • Power Consumption: Low power consumption • Digital Diagnostics Monitoring (DDM): Yes

This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.

StarTech.com SFPs

All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.

Text from Specs Icecat.

Specifications

31 specifications

Product data: Specs Icecat

GTIN
00065030886031
MPN
QSFP-40G-CSR4-ST
Performance10
SFP transceiver type
Fiber optic
Maximum data transfer rate
40000 Mbit/s
Interface type
SFP+
Multi-mode fiber (MMF) supported
Yes
Fiber optic connector
MPO
SFP transceiver standard
SR4
Maximum transfer distance
400 m
Wavelength
850 nm
Fiber ethernet cabling technology
40GBASE
Digital Diagnostics Monitoring (DDM)
Yes
Features5
Product colour
Silver
Hot-swap
Yes
Mean time between failures (MTBF)
95832027 h
Brand compatibility
Cisco
Compatible products
QSFP-40G-CSR4
Certificates1
Compliance certificates
CE, RoHS
Weight & dimensions4
Width
122 mm
Depth
18.6 mm
Height
8.5 mm
Weight
37.5 g
Packaging content1
Quantity per pack
1 pc(s)
Packaging data4
Package width
132 mm
Package depth
185 mm
Package height
47 mm
Package weight
60 g
Logistics data6
Master (outer) case width
344 mm
Master (outer) case length
412 mm
Harmonized System (HS) code
85369010
Master (outer) case height
360 mm
Products per master (outer) case
25 pc(s)
Country of origin
China