Japanese and USA plugs are similar but in actual application they are somewhat different. 3 prong plugs (for example the kind on every desktop computer and monitor in the USA) are not very common. My computers and monitors, fridge, oven, didn&#x27;t have 3 prong plugs. The computers and monitors instead the came with a 3rd cable you can optionally attach for ground.<p><a href="http:&#x2F;&#x2F;www.aim-ele.co.jp&#x2F;products&#x2F;power-cable&#x2F;images&#x2F;powercable-big.jpg" rel="nofollow">http:&#x2F;&#x2F;www.aim-ele.co.jp&#x2F;products&#x2F;power-cable&#x2F;images&#x2F;powerca...</a><p>Most extension cords and power strips only have 2 slots (not 3).<p><a href="http:&#x2F;&#x2F;www.yodobashi.com&#x2F;%E3%83%91%E3%82%BD%E3%82%B3%E3%83%B3-%E9%9B%BB%E6%BA%90%E3%82%BF%E3%83%83%E3%83%97&#x2F;ct&#x2F;19767_500000000000000201&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.yodobashi.com&#x2F;%E3%83%91%E3%82%BD%E3%82%B3%E3%83%B...</a><p>Some of them lock the plug in. You insert the plug about 30 degrees off and then twist and the plug gets locked in which solves the fall out problem people complain about in the USA.<p><a href="http:&#x2F;&#x2F;www.askul.co.jp&#x2F;p&#x2F;8430652&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.askul.co.jp&#x2F;p&#x2F;8430652&#x2F;</a><p>I like the UK ones best