I have 2. Both are packaged. Serial numbers are different and noted in pictures.

The Western Digital 40GB WD400 WD CAVIAR Desktop HDD is a reliable internal desktop drive designed for use with PCs. This hard disk drive has a storage capacity of 40GB, making it suitable for storing a variety of files and data. With its yellow and black color scheme and compact dimensions of 0.86 inches in height, 5.79 inches in length, and 3.97 inches in width, this hard drive is a practical choice for enhancing the storage capabilities of your computer system. Made by Western Digital in Malaysia, this HDD is a dependable option for expanding your desktop's storage capacity.