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Shop›Copper Cables›StarTech.com Juniper EX-QSFP-40GE-DAC-50CM Compatible 0.5m 40G QSFP+ to QSFP+ Direct Attach Cable Twinax - 40GbE QSFP+ Copper DAC 40 Gbps Low Power Passive Transceiver Module DAC
StarTech.com Juniper EX-QSFP-40GE-DAC-50CM Compatible 0.5m 40G QSFP+ to QSFP+ Direct Attach Cable Twinax - 40GbE QSFP+ Copper DAC 40 Gbps Low Power Passive Transceiver Module DAC
£19.30
£23.16 inc. VAT
Out of Stock(0)MPN: EXQSFP4050CM
🚚 Next-day delivery £4.95
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Key Features
StarTech.com Juniper EX-QSFP-40GE-DAC-50CM Compatible 0.5m 40G QSFP+ to QSFP+ Direct Attach Cable Twinax, 40GbE QSFP+ Copper DAC 40Gbps Low Power Passive Transceiver Module DAC QSFP+ Cable
Lifetime Warranty (EXQSFP4050CM)
40GBase direct attach cable
QSFP+ latched to QSFP+ latched
50 cm
twinaxial
SFF-8436
passive
Product Overview
AI-generated summary
For £19.32 ex-VAT, this is the kind of “just works” 40G copper DAC you buy when you want predictable short-reach connectivity without lighting up the optics budget. The passive twinax format is ideal for data halls where the switch-to-switch distance is modest and you’re happy keeping things simple: low latency, low power, and typically fewer moving parts than optics. If you’ve got a clean, known run—rack-to-rack or within a single row—this is exactly where DACs earn their keep.
That said, I wouldn’t buy it if you’re dealing with longer runs, lots of patching/unknown cabling paths, or you’re hoping it’ll be a universal “any brand” miracle. Compatibility is usually fine when it’s truly in-scope, but Juniper QSA/port expectations can be picky, and if your equipment negotiates optics differently, you can waste time chasing link issues. So: buy it if your distance and vendor/port compatibility are already confirmed; skip it if you need flexibility or don’t want to get involved in transceiver compatibility quirks.
Specifications
Features
Cable length0.5 m
InfiniBand protocolY
Connector 1QSFP+
Connector 2QSFP+
Connector genderMale connector/Male 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 height15 mm
Package weight116 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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