BASEQI NinjaDrive Aluminum 128GB Storage Expansion Card for MacBook Air 13" and MacBook Pro 13"/15" (Non-Retina) (128GB) 128GB (MLC) Storage expansion card for MacBook Air 13" and MacBook Pro 13"/15" (Non-Retina) Max Read: 99MB/s, Max Write: 90MB/s Use aluminum material and each one is CNC precision machining. Toolless : When you remove without any tools