I recently purchased 2 MS111 mice from snapdeal. There is no warranty card inside the box.On googling this I came to know that I must register my product on onlineregister.com/dell for claiming warranty

 I tried to register on onlineregister.com/dell but they are asking for service tag. I know its a 7-10 character code but my mouse has a D PPID number which is 20 char long. I am confused how to find the service tag on a Dell Mouse.

There's No info on this topic on any forum or google. Dell support is asking for service tag for contacting them. ( It's funny because that's my problem :) )

Any suggestions ??