This appears to be a mini display port cable. It is the same as Thunderbolt 2 but the protocol is probably not supported as it requires a dedicated chip in the connector which this cable seems to lack. If this is correct, the term Thunderbolt should be removed from the description.

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The adapters included in PureLink's iSeries have a Thunderbolt-compatible Mini DisplayPort connector on one side that converts the signal to HDMI-A, Single-Link DVI (24+1) or VGA on the other side.
 
According to the manufacturer, the item description is correct.

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Question about Purelink Mini DisplayPort — Mini DisplayPort

This appears to be a mini display port cable. It is the same as Thunderbolt 2 but the protocol is probably not supported as it requires a dedicated chip in the connector which this cable seems to lack. If this is correct, the term Thunderbolt should be removed from the description.