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Lenovo 3 metre passive SFP28 direct attach copper cable with twin transceiver ends

Lenovo

Lenovo 7Z57A03558 3M Passive SFP28 DAC network ethernet cable

SKU CH-943K-AG7KX MPN 7Z57A03558

3 m passive SFP28 direct-attach copper cable for short-reach switch-to-server links

  • Cable categorySFP28
  • First connectorSFP28 Network
  • Overall length9.84 ft (3 m)
  • Key featuresFeatures:Passive
  • SFP28 connector enables direct 28 Gb/s links
  • Passive design needs no external power supply
  • 84 ft length fits standard rack spacing
  • Cat SFP28 rating matches modern switch ports
  • New condition guarantees factory performance out of box

Lenovo 3M Passive SFP28 DAC Cable

This Lenovo 7Z57A03558 cable is a passive direct-attach copper assembly built for short-reach SFP28 ports. It ships new and measures 9.84 ft end to end. The construction uses twinax copper without active signal conditioning. It is intended for rack-to-rack or intra-rack links where a fixed-length passive cable is preferred.

Suited for fixed SFP28 links under 9.84 ft

Network engineers who need a single passive cable of this exact length for a known SFP28 port pair will find it fits directly. Buyers who require active signal conditioning, optical transceivers, or a different reach should look at other cable types. The fixed length cannot be adjusted or extended in the field.

Passive SFP28 construction at 9.84 ft

The defining specification is the passive SFP28 design at a fixed 9.84 ft length. That combination decides whether the cable matches the port budget and physical distance in your rack. Verify the port type and required reach before ordering.

How it compares

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

Price $83.99
Pricier than about 90% of the 9,945 comparable items (median $14.99).

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Specifications

Product
Brand nameLenovo
Connectivity
Cable categorySFP28
Ports & slots
First connectorSFP28 Network
Size & build
Overall length9.84 ft (3 m)
Shipping weight0.23 kg
Package size279 × 229 × 13 mm

Questions about this item

Do I need SFP28 ports on both devices for this 9.84 ft cable to work?

Yes, each end plugs into an SFP28 network port, so both switches, servers or NICs must provide that interface.

Will this passive SFP28 DAC link to an SFP+ port on my older switch?

The cable is built to the SFP28 specification; SFP+ ports use a different electrical interface and will not establish a link with this assembly.

How can I confirm the 9.84 ft cable is operating correctly after I connect it?

Check the port LEDs on both devices — a solid link light and blinking activity light show the passive DAC has negotiated a live connection.

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