magnet:?xt=urn:btih:660c30f291228b24ee60c02385f33f65b70374ca&xt=urn:md5:442bad4b00218f631041307310c43309&xl=334059&dn=qtserialport-opensource-src-5.4.2.tar.gz&as=https://download.qt.io/new_archive/qt/5.4/5.4.2/submodules/qtserialport-opensource-src-5.4.2.tar.gz&tr=http://bt.qt-project.org:6969/announce