It is scorpio blue2 1/2 inch laptop drive 500 gb. WD500BPVT-75HXZT1 I really need to find this one, for data recovery.
If you want that drive go to Ebay or Amazon
or better yet google
Each drive has unique “adaptive” data stored in flash memory.
The following thread has more information:
http://community.wdc.com/t5/WD-Portable-Drives/Help-WD-MyPassport-portable-hd-usb3-0-controller-spoilt/m-p/465470#M11797