The Official Microsoft Xbox 360 20GB Hard Drive HDD in Gray is a genuine external unit designed specifically for the Original Phat Xbox 360 console. With a storage capacity of 20GB, this hard drive is manufactured by Microsoft in 2006 and is compatible with the Xbox 360 platform. It can be easily connected to the console through a parallel port, providing additional storage space for downloading and storing games, videos, and other media files. Made in China, this hard drive is a reliable and authentic accessory for enhancing the gaming experience on the Xbox 360 console.