It is an Original NEW HL GS31N 9.5mm Super Slim 8X DL DVD RW Burner Slot SATA Drive 678-0612A for Macbook Pro MD322ZP/A MD313ZP/A MD318

It is 100% brand new, High speed, excellent quality.

180 Days Warranty

Can replace the GS23N, GS21N

Compatibility:

- fits newest macbook.

-Please make sure it fits your macbook.

• Interface: SATA
• Model number: Hitachi-LG GS31N
• Function:
  Write speed:
  8X DVD±R
  4X DVD±RW
  4X DVD+R(DL)
  2X DVD-R(DL)
  24X CD-R
  16X CD-RW
• Read speed:
  24X CD-ROM
  8X DVD-ROM
  Seek Times: DVD-ROM/CD-ROM 140msec
•