9.5mm 2nd HDD SSD Hard Drive Optical bay Caddy Frame Adapter for DELL Vostro 2521 3300 3340 3350 3360 3568 3578 GU90N DVD|Laptop Repair Components| - AliExpress
NIGUDEYANG SATA 2nd HDD SSD HD キャディーアダプタデルの Vostro 15 3558 3568 + PowerEdge R430 サーバ|HDD ケース| - AliExpress
Can SSD be installed in Dell Vostro 15 3568 model as it doesn't support any slot for SSD, and can the internal HDD be replaced without any issues? - Quora