It seems the driver pack that supports 310U/620U, 320U/340U/620UT+/640UT, 240UT/5100U, 640BT/640BU, 300U/3300U works in 32-bit versions of Windows 7 & 8.
Google will find it for you easily enough.
Last edited by Bushfiva; 23rd September 2013 at 04:07.