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DAC

DAC usually means Direct Attach Cable: a pre-terminated copper cable assembly for connecting compatible network ports over a short link. The label alone does not confirm exact compatibility or performance.

What DAC means

On a CableFit product page, DAC usually means Direct Attach Cable. It is a pre-terminated copper cable assembly intended to connect compatible network equipment directly, rather than using separate transceivers and a loose cable.

DAC is a cable type, not a rating for build quality, speed, reach, or reliability. CableFit listings include products labelled DAC and Active DAC, so the label should be read alongside the full product specifications.

Why the term matters

DAC can help narrow a search when you need a direct cable connection between matching network interfaces. It may also distinguish a product from a fibre-optic cable or from a cable that requires separate optical modules.

The term does not, by itself, tell you whether a particular cable will work with your equipment. Compatibility can depend on the connector format, the port or module standard, the cable length, and any equipment-specific requirements stated on the product page.

Passive and active DAC labels

A listing marked Active DAC indicates an active version of the cable type. That is a capability or construction label, not a general quality score. It does not prove that the cable is faster, longer-lasting, or suitable for every device.

Similarly, a plain DAC label does not supply all the details needed to compare products. If the listing does not state whether the cable is passive or active, that distinction remains unknown.

What to check on a product page

Before treating a DAC listing as a match, check:

  • The stated cable type, including whether it is DAC or Active DAC.
  • The connector type at each end, rather than assuming both ends use the same interface.
  • The listed length.
  • The supported port, module, or network standard, if provided.
  • Whether the product is a single-link cable or a breakout assembly.
  • Any stated equipment, coding, or compatibility limitations.

CableFit product data includes connector descriptions such as 4xSFP+ PDAC. A connector label like this should not be treated as a complete specification unless the product page also explains the cable's end arrangement and compatibility. If those details are missing, they stay unknown.

Nearby terms

Active DAC describes a related cable variant. SFP+ is a connector or interface format that may appear in a DAC listing, but seeing the term does not establish every supported device or network standard. Fibre-optic cable is a different cable medium and should not be assumed interchangeable with a copper DAC.