My book 3T USB3 is not recognized

I am Using this external driver in other PC and it is working fine. However, when I connect it on my laptop with Windows XP and USB 2, it is not showing up in my Computer.

I installed SES Driver, I can see it on Devise Manager but I can not see it on my Computer.

What should I Do?

Try the steps provided on the following link:

WD external drive is not assigned a drive letter by Windows or Mac OSX and data on the drive is inaccessible

Did you reformat the drive? XP 32 bit doesn’t generally recognize drives over 2 T. The WD format utility has an option for XP.