When ordering, I received a defective block. Surge protection was provided for the installation. I contacted the seller and the seller promised a replacement but nothing came so I exchanged through Revain. The second block I received passed the test. (By the way, it's a good idea to look under the hood of every power strip and USB adapter you plan to use. There's something scary in there.) Also, the cord is shorter than the description, which meant I didn't was able to use it for my intended main site.
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