How To Tell If A SATA Cable Is 6GB? [5 Easy Methods]

A SATA cable is a computer data cable used to connect hard drives, solid-state drives, and other devices to the motherboard.

SATA 3.0 is the third generation of SATA cable and is more advanced in terms of speed and functionality than its predecessor.

These cables are able to reach the maximum transfer rate of 6 Gigabytes per second (Gb/s), but how to tell if a SATA cable is 6GB?

Evolution of SATA cables

There have been three generations of SATA cables. The first generation allowed for data transfer rates of up to 1.5Gb/s.

The second generation of SATA cables, which became available in 2004, increased the transfer speeds to 3Gb/s.

Finally, the third generation of these data cables allows for 6 Gb/s and comes with almost all the latest gaming motherboards.

How To Tell If A SATA Cable Is 6GB Is 6GB Compatible

You can determine if SATA cable provides 6Gb data transfer speed through various methods, some of which include backward compatibility with previous SATA versions, 6Gb/s transfer rate, 90-degree angled connector, a locking latch, and durable low-profile construction.

Locking latch

Almost all SATA 3.0 cables today come with a locking latch, which can help you identify if it is compatible with 6 Gb/s transfer.

You can look for this metal latch on either one or both ends of the cable. The purpose of this connection is to ensure that your connectors lock tight and stay put and prevent accidental disconnections between storage devices and motherboards.

Locking latch is something that was not a part of SATA 1 or SATA 2 cables.

SATA cable

The transfer rate and backward compatibility

The 6Gb/s transfer rate is backward compatible with 1.5Gb/s and 3Gb/s SATA cables, allowing you to connect older devices to newer motherboards.

The Length

Most SATA cables for version 3 drives are up to 1 meter long. This extends the range of configuration options available when connecting storage devices within a PC case.

As an alternative, these cables are much longer than their predecessors (e.g., 18in or 46 cm).

The Length

90 Degree Angle Connector

SATA 6Gb cables are equipped with a 90 degree angled connector that is easy to a plugin, while the older version lacks this feature.

The angel allows for a tighter fit and space-saving capabilities when attempting to connect drives inside your PC case, thereby making it easier for users to install components.

It also ensures that you can reach tight spaces when connecting SATA to your system.

90 Degree Angle Connector

Durable and flat construction

The latest version of SATA is designed to be more durable and flat compared to the previous generation, which means that it’s less prone to bending and breaking.

They’re more low-profile and help to maintain airflow in your computer’s casing. This helps it stay cooler and cleaner! Additionally, a flat design means fewer tangles and snags to your cable, extending its lifespan.

Is the SATA 6Gb/s Interface Compatible with Older Ports?

SATA 6Gb/s drives are compatible with previous generations of SATA technology, including ports that support the 3Gb/s or 1.5 Gb/s interfaces.

However, you should be aware that when connected to a port that supports either a SATA 3Gbps or 1.5 Gbps interface, the maximum read and writes speeds of a 6Gb/s drive will be reduced accordingly.

Can you tell if a SATA is 6GB by its color?

No. You cannot tell if a cable is 6GB by its color. SATA 3.0 doesn’t come with a specific color; you can find the ones with red, blue, and some black, all available in the market.

There is also no color code for the previous generation SATA cables. Hence, the only way to confirm if your SATA supports 6GB/s and is made as per the latest standard is by going through the methods we mentioned above.


By now, it is quite clear how to tell if a SATA cable is 6GB compliant. If you’re on the market for a new SATA cable or planning to upgrade your existing one, keep in mind that backward compatibility is necessary.

If you’re trying to connect 6GB devices with older ports, its speeds will be reduced accordingly and may not function properly!

Also, it’s impossible to take advantage of the 6Gb/s speed that the SATA cable supports without considering the version of your hard drive and motherboard features.

Additionally, we suggest buying a SATA cable from a reputable manufacturer, such as StarTech, since cheap cable usually tends to bend, break or develop problems after some time.

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