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Black QSFP28 twinaxial direct attach cable 1.5m with connectors both ends

Qnap

Qnap CAB-DAC15M-Q28 network ethernet cable 1.5m 100GbE QSFP28

SKU CH-21QR-PJX7Y MPN CAB-DAC15M-Q28

A 1.5 m QSFP28 direct-attach cable for 100 GbE links between compatible NAS units and storage arrays

  • 100 GbE throughput for demanding workloads
  • 5 m length fits rack-to-rack links
  • QSFP28 connectors on both ends
  • Twinaxial construction for signal integrity
  • Direct attach design simplifies installation

Direct Attach Cable for 100GbE Links

This 1.5 metre QSFP28 twinaxial cable connects compatible network adapters and NAS systems at 100GbE speeds. It is built for administrators who need a short, factory-terminated link between rack-mounted equipment. The direct-attach design removes the need for separate transceivers and patch cords.

QSFP28 Connector Pair and 100GbE Rating

Both ends carry a QSFP28 interface rated for 100GbE throughput, so the cable only works with ports that explicitly support that speed and form factor. It will not function in QSFP+ or lower-rate slots, and it cannot be used to break out into multiple slower links.

Rack-Friendly Length for Adjacent Gear

At 4.9 feet the assembly reaches between neighbouring devices in the same rack or adjacent racks without excess slack. The fixed twinax construction keeps the bend radius predictable and eliminates separate fibre cleaning steps. It draws no external power and adds no latency beyond the copper medium itself.

How it compares

Measured against everything we stock in Ethernet & LAN Cables, at today’s prices. Recalculated every night.

Price $137.99
Pricier than about 90% of the 9,945 comparable items (median $14.99).

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Specifications

Size & build
Shipping weight0.52 kg
Package size279 × 241 × 25 mm

Questions about this item

What does the 100GbE rating mean when I plug this cable into my switch or NAS?

The cable supports 100 Gb/s signalling end-to-end, so two 100GbE QSFP28 ports will link at full line rate with no protocol overhead loss.

Does the QSFP28 interface limit the distance or speed I can actually achieve?

QSFP28 defines the electrical and mechanical interface for 100 Gb/s over copper; the 1.5 m twinax construction keeps insertion loss within spec for that full rate.

What physical clearance do I need behind the rack to route the 1.5 m twinax without stressing the ports?

The cable is 1.5 m long with QSFP28 plugs on both ends; allow enough depth for the minimum bend radius so the connectors seat fully without lateral force.

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