Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does this block the second outlet on the wall when plugged in?
Document: It offers a $75,000 guarantee for devices properly connected to it and has indicator lights so you can ensure that the unit is properly functioning. When plugged into the bottom outlet on the wall the upper outlet is completely available for use with this unit. The travel benefits of this device are obvious and this will easily slip into a laptop bag.
The plugs on each side allow 2 bricks to be plugged in at the same time. Folding plug prevents in bag snags. Have not used the phone/ethernet protection feature, like others have said, protect one or the other, not both at the same time and made for US 120V current only. Plugs fit a little tight in the outlets such that it may be easier to plug in devices first and then plug this into the wall, but that could just be my plugs.
I ordered two of these to use within the USA. I plugged one into my wall socket and, as I had a phone call, forgot to plug my new tablet into it. THANK GOODNESS for that phone call! I came running back shortly later when I heard a tremendous pop and saw smoke rising from it. I shudder to think about my brand new tablet and what might have happened. I checked the other one at a separate location (not my home) and had the same thing happen within minutes.
I was unable to even use it for a day. It just blew up as I plugged it in to the outlet.
This is small, lightweight, and works well. The photo only shows one outlet, but there are actually two (there is another outlet on the other side) so you can have up to two devices plugged into this adapter.
This product has a fold up plug and two outlets, lights to indicate power on and proper grounding, and is reasonably compact for travel.On a recent vacation my hotel room literally had one available outlet. I plugged this product in and now had two outlets, which still was not enough.
I have had the belkin travel surge protector for 2 months now. It is great for peace of mind when away from home (or at home away from surge protector). My husband had his laptop plugged in at home without surge protection and while out a storm fried his computer. So I took a lesson and bought this one for home and away. It works great. I haven't had any problem with the surge outlet being sticky - as mentioned in some reviews. It's been great! Definitely recommend!
This is the second one of these that I bought, and I'm happy with both of them, love how the plug folds in.
We have been using this for years is the second one we have. Anything built by Belkin in is a great product at a great price
This is great for my portable DJ equipment. I wanted to protect it from surges but i dont want to bring a power strip. This is the best for protection in a compact size. great for travel and home use.2 plugs perfect for my macbook pro and my controller! Now I feel safe with I plug it in the wall.
Answer: No, the top outlet is not blocked when plugged into the bottom receptical of the outlet.   A great reliable product for home use.   The foldin plug makes it good for travel.