A second HDD/SSD caddy is a storage expansion device designed to replace a laptop’s optical drive (DVD-ROM) bay. The most common, standard specifications for these caddies include a 9.5mm or 12.7mm thickness, a SATA internal interface for the hard drive, and a SATA external interface to connect to the motherboard Key Specifications: Form Factor: 2.5-inch (supports 2.5″ SATA HDD or SSD). Thickness: Generally 9.5mm (for newer slim laptops) or 12.7mm (for older/larger laptops). Internal Interface (Drive side): SATA (supports SATA I, SATA II, SATA III). External Interface (Laptop side): SATA/SATA 3.0 (6Gbps). Material: Usually Aluminum (for heat dissipation) or ABS plastic. Maximum Capacity: Often supports up to 2TB, with some supporting 3TB or more depending on the laptop BIOS. Compatibility: Universal fit for most laptops with a 9.5mm or 12.7mm SATA optical bay. Features: Plug-and-play, no drivers required, often includes a removable faceplate/bezel, and 4 mounting screws. Categories: HDD Caddy 9.5 mm, LAPTOP ACCESSORIES
