HIGHDING SATA CD DVD-ROM/RAM DVD-RW Drive Writer Burner for HP Pavilion dv4 dv4t dv4z Series Please do not simply use the Add to Cart button. Click on the word "new" below to expand the page and see sellers and prices Write Speed: DVD-R: 8x max. DVD+R: 8x max ; DVD-RW: 6x max. DVD+RW: 8x max ; DVD-R DL: 6x max. DVD+R9: 6x max ; CD-R: 24x max. CD-RW: 24x max Compatibility: All Windows OS NOTE THAT : 1. Our optical drive is just a bare dvd 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 a screwdriver, then install them on our optical drive, and then you can use it. 3. We include one manual in package box for your reference, it is very easy to operate.