Epson EL 3S/33 - Manual (Page 52)

Installing an Option Card
This section explains how to install option cards in your
computer. Your computer has three 16-bit full-length slots and
two B-bit half-length slots to accommodate a total of five option
cards.
Usually it does not matter which slot an option card occupies as
long as the card fits in the slot. For example, you can place
some B-bit cards in a 16-bit slot. However, you cannot install a
16-bit card in an B-bit slot.
Caution
Make sure the power requirements for the option cards you
install do not exceed the power supply limitations. See your
option card manual(s) for the power requirements. Then
check Appendix A for the option slot power limits. Note that
older option cards that require -5 volts are not supported.
Before you install an option card, see if you need to change any
jumper settings on the system board. For example, if you install
a video card, you may need to change jumpers J11, J15, or J36
and J37. See page 3-6 for more information on jumpers.
Refer to the illustration below and follow these steps to install
an option card:
1. If you are using a 16-bit option slot, go on to step 2.
If you are using an B-bit slot near the power supply, you need
to remove the power supply before you can remove the
metal slot cover.
Installing and Removing Options 3-13