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Shop›USB Cables & Adapters›StarTech.com MSA Uncoded Compatible 0.5m 40G QSFP+ to QSFP+ Direct Attach Breakout Cable Twinax - 40 GbE QSFP+ Copper DAC 40 Gbps Low Power Passive Transceiver Module DAC
StarTech.com MSA Uncoded Compatible 0.5m 40G QSFP+ to QSFP+ Direct Attach Breakout Cable Twinax - 40 GbE QSFP+ Copper DAC 40 Gbps Low Power Passive Transceiver Module DAC
£20.05
£24.06 inc. VAT
Out of Stock(0)MPN: QSFP40GPC05M
🚚 Next-day delivery £4.95
Quantity:1
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Key Features
StarTech.com MSA Uncoded Compatible 0.5m 40G QSFP+ to QSFP+ Direct Attach Breakout Cable Twinax, 40 GbE QSFP+ Copper DAC 40 Gbps Low Power Passive Transceiver Module DAC, 40GE, 40GE Cable
Lifetime Warranty (QSFP40GPC05M)
40GBase direct attach cable
QSFP+ latched to QSFP+ latched
50 cm
twinaxial
SFF-8436
passive
Product Overview
AI-generated summary
At £20.08 ex‑VAT for a 0.5m 40G QSFP+ DAC breakout, this is the kind of cable that makes sense if you already have the right optics/cages and you’re trying to stop overpaying for “fancy” interconnects. It’s passive, so you’re basically buying signal integrity and reliability without the moving parts/heat of active optics. In day-to-day terms: ideal for short rack-to-rack or top-of-rack to switch, where you want something that just works and doesn’t add latency/complexity. If your environment is stable and you’re not pushing weird distances, it’s good value for the money.
Where I’d be cautious: if you’re mixing vendors, using “uncoded/compatible” gear, or you’ve got a strict network monitoring/firmware regime, you can hit annoying compatibility quirks (link won’t come up, flaps, or it logs warnings even if it “works”). For a B2B reseller, I’d only recommend this where you can confirm your switch/NIC supports this exact DAC style and that your partner documentation doesn’t warn against it. Also, for cable management—0.5m can be great, but if your rack layout needs a bit more slack, you’ll end up forcing bends or fighting cable strain for no benefit.
Specifications
Features
Cable length0.5 m
InfiniBand protocolY
Connector 1QSFP+
Connector 2QSFP+
Connector 1 genderMale connector
Certificates
Compliance certificatesRoHS
CertificationCE, FCC, REACH
Operational conditions
Operating temperature (T-T)0 - 70 °C
Storage temperature (T-T)-40 - 80 °C
Weight & dimensions
Weight100 g
Packaging data
Package width250 mm
Package depth325 mm
Package height25 mm
Package weight110 g
Packaging content
Quantity per pack1 pc(s)
Logistics data
Master (outer) case width255 mm
Harmonized System (HS) code84733080
Master (outer) case length344 mm
Master (outer) case height295 mm
Products per master (outer) case10 pc(s)
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