The WD Enterprise WDE 9100 SCSI 9.1Gb HDD is a silver-colored internal desktop drive with a storage capacity of 9 GB. It is compatible with both PC and Mac systems, featuring a rotation speed of 7200 RPM and a cache size of 512 KB. This Western Digital HDD is designed for use with SCSI interface and has a form factor of 3.5 inches. With a storage format of HDD only and a unit quantity of 1, this hard disk drive is a reliable choice for those in need of high-performance storage solutions.