This is the Insignia 3.5" Serial ATA Hard Drive Enclosure model NS-PCHD335. This Insignia NS-PCHD335 enclosure's aluminum construction safeguards your 3.5" Serial ATA hard drive against damage, allowing external use. USB 3.0 connectivity and a plug-and-play design help make setup easy. Aluminum construction: Provides a durable design to safeguard your hard drive. Compatible with most 3.5" Serial ATA hard drives: To convert an internal hard drive for external use. Also PC and Mac compatible. This item is brand new in opened retail packaging. Why Pay Retail Prices? Buy Online Today!