Read Speed: BD: 4x max. DVD: 8x max. CD: 24x max. * Write Speed: BD-R: 4x max. BD-R DL: 2x max. BD-RE: 4x max. BD-RE DL: 2x max. DVD-R: 8x max. DVD+R: 8x max. DVD-RW: 8x max. DVD+RW: 8x max. DVD+R DL: 4x max. DVD-RAM: 5x max. CD-R: 16x max. CD-RW: 16x max. * Mechanism & Interface : Slot Loading & S-ATA * Compatibility: MultiRead, PC2001, Windows XP, Windows Vista , Windows 7, Windows 8, OS * NOTE THAT : 1. Our optical drive just is Blu-ray drive WITHOUT any original accessories( faceplate,mounting frames, hooks, brackets) 2. If you replace your old optical drive by yourself, you just need to remove your old optical drive"s accessories with screwdriver, then install them on our optical drive, then you can use it. 3. We match one manual in package box for your reference, it is so easy to operate.