External DVD-RW drives can read and write any dual or single layer BR-R, DVD+R / -R +RW / -RW or CD. Connected via USB these drives are removable when not being used and don't require a 5.25" internal drive bay for installation.Evatech's Preffered Optical Drive Vendors : Samsung, Pioneer, Lite-On 

Internal Blu-Ray drives can read and write any dual or single layer BR-R DVD+R / -R +RW / -RW or CD. Mounted internally, these drives are SATA powered and require a 5.25" drive bay.Evatech's Preffered Optical Drive Vendors : Samsung, Pioneer, Lite-On 

External DVD-RW drives can read and write any dual or single layer DVD+R / -R +RW / -RW or CD. Connected via USB these drives are removable when not being used and don't require a 5.25" internal drive bay for installation.Evatech's Preffered Optical Drive Vendors : Samsung, Pioneer, Lite-On 

Internal DVD-RW drives can read and write any dual or single layer DVD+R / -R +RW / -RW or CD. Mounted internally, these drives are SATA powered and require a 5.25" drive bay.Evatech's Preffered Optical Drive Vendors : Samsung, Pioneer, Lite-On