Yamaha O2R Owner's Manual page 332

222 Installing Options
02R User's Guide
Double Slot Cards
1. Turn off the 02R.
TO PREVENT ELECTRICAL SHOCK, ENSURE THE 02R IS TURNED OFF
BEFORE YOU OPEN ANY OF THE SLOT COVERS!
Note: Before you install a card in the 02R, be certain to turn the power
off. Not only do you risk electrical shock, you can also damage either the
02R or the optional card. You will also invalidate any warranties for the 02R
or the optional cards.
2. Remove the cover plate from the slot in which you intend to insert
the optional card as well as the slot over top
The double slot cards can only be installed in SLOT1 and/or SLOT2.
Note: You should save the cover plates for possible later use. You should
also never operate the 02R with one of the slots uncovered. This disrupts
the flow of air through the power supply and other components and can
cause premature failure of internal components.
3. Insert the optional card as shown below.
When you insert the card, press it firmly into the slot to make certain
the connector on the card edge seats firmly on the bus slot inside the
02R. Make sure the card is properly secured with the screws that held
the cover plate in place.
4. Turn on the 02R.
Verify that the card has been recognized by the 02R on the DIGITAL
I/O 1/5 page (see "Word Clock Select" on page 188 of the User's Guide).
If the card was installed properly, the 02R should correctly identify it in
the appropriate slot.