Ricoh MP5125A - Manual (Page 19)

Using the Drive in a Vertical Position
The drive can be installed in a vertical position.
Locate the four tabs on the disc tray.
Turn each of them inwards untill they click into place.
1.
When loading a disc, insert it into the inner side of the tabs.
Caution
Cannot be used with 80mm CDs.
Cannot be used with business card CDs.
2.
Back
Load the media Disc ejection
Emergency Eject Using the Drive in a Vertical Position