$ sudo dpkg -i /home/vco/Vbox/virtualbox-5.0_5.0.14-105127-Ubuntu-trusty_amd64.deb
dpkg: regarding .../virtualbox-5.0_5.0.14-105127-Ubuntu-trusty_amd64.deb containing virtualbox-5.0:
 virtualbox-5.0 conflicts with virtualbox
  virtualbox-4.3 provides virtualbox and is present and installed.

dpkg: error processing archive /home/vco/Vbox/virtualbox-5.0_5.0.14-105127-Ubuntu-trusty_amd64.deb (--install):
 conflicting packages - not installing virtualbox-5.0
Errors were encountered while processing:
 /home/vco/Vbox/virtualbox-5.0_5.0.14-105127-Ubuntu-trusty_amd64.deb