This is the first adapter kit that supports the latest HomePlug AV2 standard. This standard, in theory, offers the speed cap of up to 1.5Gbps. The kit, however, doesn't quite support the top speed of the standard; rather, just 500Mbps at most, which is the speed at which certain HomePlug AV-based devices are capable. Nonetheless, in my testing, it has indeed offered the fastest sustained real-world speed among all powerline adapters I've seen.
Whether this performance is going to be just the new normal for powerline adapters, we'll have to wait and see when more HomePlug AV2-based adapters become available. In the meantime, the Linksys PLEK500 is the fastest powerline adapter kit you can get, enough to justify its relatively high price of $120. For more choices, check out the alternatives on this list.
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