
When ordering make sure to check the bottom of the box to see if you received version 1 or version 2 of the light bar. I have version 1 and noticed a high pitched beep coming from the power supply. After contacting TPLink, they found out that this is a defect. I reordered through Revain to avoid the return shipping cost and they sent me version 2. Unfortunately, there's no way to choose which version you get. So far when using version 2 there hasn't been a slightly shrill sound as in version 1. The power supply seems to have been changed between versions.

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