As other reviewers pointed out

Note this things works only at 120v that means it will simply blow out when u will use it in countries which have higher voltage ratings

The prongs always stick outi am not able to carry it around in my laptop bag

Apc do have other products which work at higher ratings tooupdate5 years on and this thing is still working for me the notebook surge arrest protector is obviously useful because it protects your expensive laptop from electrical damage