magnet:?xt=urn:btih:5a7fa67488f2f83be088c097aca461044317ace5&xt=urn:md5:0bb2ebff11415086505cad091ca2ac5d&xl=520250&dn=qtserialport-opensource-src-5.9.9.zip&as=https://download.qt.io/new_archive/qt/5.9/5.9.9/submodules/qtserialport-opensource-src-5.9.9.zip&tr=http://bt.qt-project.org:6969/announce