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Shop›Switch Tranceivers (GBIC/SFP)›StarTech.com HPE JG661A Compatible QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM HPE 5900AF, 12902
StarTech.com HPE JG661A Compatible QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM HPE 5900AF, 12902
£111.28
£133.54 inc. VAT
Out of Stock(0)MPN: JG661A-ST
🚚 Next-day delivery £4.95
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Key Features
StarTech.com HPE JG661A Compatible QSFP+ Module, 40GBASE-LR4, 40GbE Single Mode (SMF) Fiber Optic Transceiver, 40GE Gigabit Ethernet QSFP+, LC 10km, 1270nm to 1330nm, DDM, HPE 5900AF 12902
Lifetime Warranty (JG661A-ST)
QSFP+ transceiver module (equivalent to: HP JG661A)
40GbE
40GBase-LR4
LC single-mode
up to 10 km
850 nm
Product Overview
AI-generated summary
If you’ve got an HPE 5900AF or you’re using the 12902 gear and you need a like-for-like QSFP+ optics replacement, this is a pretty sensible buy. The price (~£123.83 ex-VAT) is in the “don’t overthink it” range for 40G single-mode LR4 on 10km-class links, and DDM support is the kind of practical feature that saves you headaches when you’re troubleshooting link health. In day-to-day reseller life, the value here is mostly about getting optics that behave predictably in the target ecosystem rather than rolling the dice on vague compatibility.
That said, I wouldn’t buy it for anything outside the intended HPE compatibility context unless you’re 100% sure your switch ports accept StarTech-coded optics (some environments are picky, even when specs look right). Also, make sure your planned reach and fiber type match what you actually have—10km optics can be fine, but only if the installed plant (loss, patching, cleanliness) is up to scratch. If you just need short-reach within a rack or you’re uncertain about compatibility, you might be better off choosing a solution explicitly aligned to your switch model and distance requirements to avoid swap-test turns into a time sink.
Specifications
Performance
SFP transceiver typeFiber optic
Maximum data transfer rate40000 Mbit/s
Interface typeQSFP+
Multi-mode fiber (MMF) supportedY
Fiber optic connectorMPO
Features
Product colourSilver
Hot-swapY
Mean time between failures (MTBF)244610583 h
Brand compatibilityHP
Compatible productsJG661A
Power
Power consumption (typical)1.3 W
Certificates
Compliance certificatesRoHS
CertificationREACH, CE, FCC
Weight & dimensions
Width122 mm
Depth18.3 mm
Height8.5 mm
Weight49 g
Packaging content
Quantity per pack1 pc(s)
Packaging data
Package width120 mm
Package depth205 mm
Package height35 mm
Package weight60 g
Logistics data
Master (outer) case width120 mm
Master (outer) case length205 mm
Harmonized System (HS) code85369010
Master (outer) case height35 mm
Products per master (outer) case1 pc(s)
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