This alone does not make an HDD. A high-speed backup iVDR loading adapter for cassette HDDs. A loading unit that allows you to use an iVDR cassette HDD as a removable storage device. - Brand: I-O DATA - Model Name: RHDM-IN/SA - Type: iVDR loading adapter - Connection Method: SerialATA - Application: For backup - Supported Sizes: 3.5-inch / 5-inch HDD compatible - Features: High-speed backup - Data Format: For cassette HDD https://www.iodata.jp/product/hdd/cartridge/rhdm-insa/ iVDR cassette not included. Unopened, so operation has not been confirmed.