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Shop›Switch Tranceivers (GBIC/SFP)›StarTech.com Arista Networks QSFP-40G-SR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - MPO 150m - 850nm - DDM
StarTech.com Arista Networks QSFP-40G-SR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GbE Multimode Fiber MMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - MPO 150m - 850nm - DDM
£32.10
£38.52 inc. VAT
Out of Stock(0)MPN: QSFP-40G-SR4-AR-ST
🚚 Next-day delivery £4.95
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Key Features
StarTech.com Arista Networks QSFP-40G-SR4 Compatible QSFP+ Module, 40GBASE-SR4, 40GbE Multimode Fiber MMF Optic Transceiver, 40GE Gigabit Ethernet QSFP+, MPO Connector, 150m, 850nm, DDM
Lifetime Warranty (QSFP-40G-SR4-AR-ST)
QSFP+ transceiver module (equivalent to: Arista Networks QSFP-40G-SR4)
40GbE
40GBASE-SR4
MPO multi-mode
up to 150 m
850 nm
Product Overview
AI-generated summary
At £32 ex-VAT, this is the sort of “it just needs to work” optics you buy for day-to-day networking without paying the premium for brand-name parts. StarTech’s compatible QSFP+ modules with DDM are generally a good fit when you’ve got straightforward 40GbE multimode links and you want reliable reach and visibility (DDM helps you spot aging optics before they become outages). If you’re running Arista-style environments or mixed-brand gear where you’ve already confirmed the module type is supported, this is good value and a sensible way to keep spares on the shelf.
Why you might *not* buy it: compatible optics are only as safe as your switch’s compatibility list and your fibre plant. If your links are unusual, you’re pushing the distance limits, or your vendor is strict about optics authentication, you may get warnings, limited functionality, or refusal to link—something you really don’t want at 2am. Also, for production-critical links, I’d sanity-check compatibility with your exact switch model and fibre type/vendor before scaling purchases. For someone who just needs multiple 40GbE SR4 drops and wants cost-effective spares, it’s a solid choice; for “unknown compatibility” or mission-critical change windows, I’d be more cautious.
Specifications
Performance
SFP transceiver typeFiber optic
Maximum data transfer rate40000 Mbit/s
Interface typeSFP+
Multi-mode fiber (MMF) supportedY
Fiber optic connectorMPO
Features
Product colourSilver
Hot-swapY
Mean time between failures (MTBF)244610583 h
Brand compatibilityArista Networks
Compatible productsQSFP-40G-SR4
Certificates
CertificationCE, FCC, UR, REACH
Weight & dimensions
Width122 mm
Depth18.6 mm
Height8.5 mm
Weight37.5 g
Packaging content
Quantity per pack1 pc(s)
Packaging data
Package width90 mm
Package depth115 mm
Package height31 mm
Package weight50 g
Logistics data
Master (outer) case width90 mm
Master (outer) case length115 mm
Harmonized System (HS) code85369010
Master (outer) case height31 mm
Products per master (outer) case1 pc(s)
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