i want to transfer my data from mobile to laptop with data cable
All the mobile phones do not have this option (most of the recent ones have it, though). So make sure your mobile has this feature (one very good way of knowing is if the data cable has come with the mobile, then the phone must be capable of such transfer). Also make sure your computer has a USB port (again, all the recent ones have it) If you look at the data cable, you will find one USB socket (for the image, search USB in google images), and one socket of another shape - plug in the USB into your computer and the other end to your phone. You will be able to access the phone now as a pendrive, and copy/paste/delete data. If you want to also manage your contact lists and other details through the data cable, you will have to install a software provided by the cell phone manufacturer if at all he does that for the model you use. Hope this helps.
connect the data cable to your laptop and use the software recommended by the brand/ manufacturer of your cell phone. Like OVI suite for nokia