Sliding Naked SATA6G (CSDRU3B6G) Docking station for 3.5-inch and 2.5-inch SATA hard disk drives with USB 3.0 connection (equipped with a guide for fixing 2.5-inch HDDs/SSDs) Please refer to the following for the instruction manual: https://www.century.co.jp/products/manual/CSDRU3B6G_m05.pdf The items for sale are the main unit, AC adapter, and USB 3.0 cable as shown in the first photo (no instruction manual or box). I connected it to Windows 11 and confirmed its operation as shown in the fifth photo and later. (The HDD used for operation confirmation is not included in the sale.) Please check the photos and consider purchasing. Please understand that this is a used item and will be sold as is. Please refrain from purchasing if you are looking for perfect operation. We cannot accept returns or refunds after the purchase process is completed. Thank you for your understanding.