This is LiteOn DH-16D2P Internal DVD-ROM drive.
Device Type: DVD-ROM drive - internal 
Color: Black 
Interface: IDE 
Media Load Type: Tray 
Features:

SMART-X, Auto Balance System (ABS), VAS
Interfaces: E-IDE/ATAPI
OS Required: Microsoft Windows 2000, Microsoft Windows XP, Microsoft Windows Vista 
System Requirements: Pentium 4 or hihger 1.3 GHz 

Brand: Lite-on 

Part Numbers:  DH-16D2P-08C
UPC: 00844149002552