Asus X751LD - Manual (Page 17)

Notebook PC E-Manual 1
Right Side
USB 2.0 ports (on selected models)
These USB (Universal Serial Bus) ports are compatible with USB
.0 or USB 1.1 devices such as keyboards, pointing devices, flash
disk drives, external HDDs, speakers, cameras and printers.
Optical disc drive
Your Notebook PC’s optical drive may support several disc
formats such as CDs, DVDs, Blu-ray discs (on selected models)
recordable discs, or rewritable discs.
Optical disc drive electronic eject button
Press this button to eject the optical drive tray.