Original post by: Abdur Rahman ,
I reviewed the [http://dlcdnet.asus.com/pub/ASUS/nb/X555LA/0409_E10293_X555LA_LD_LN_V3_A.pdf|E-Manual] for your model and there was no information listed about the size of the optical drive. Upon doing a [http://us.estore.asus.com/search?q=internal+dvd|search] on the Asus eStore using the terms '''internal dvd''', of the several optical drives listed, each were 12.7mm. I would recommend [http://us.estore.asus.com/pages/contact-us|contacting] Asus directly at verify this is the size of your optical drive. If this is the case, you may be able to order through them directly. A [http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dcomputers&field-keywords=12.7mm+ssd+dvd&rh=n%3A541966%2Ck%3A12.7mm+ssd+dvd|search] on Amazon using the terms '''12.7mm ssd dvd''' displays multiple results that would be compatible, but I recommend verifying the dimensions before ordering.