Epson EL 486UC - Manual (Page 63)

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.
Refer to the illustrations 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 S-bit slot near the power supply, you need to
move the power supply before you can remove the metal
slot cover.
Remove the screws securing the power supply to the computer,
as shown below. Be careful not to disconnect any of the
cables. Slide the power supply away from the option slots
until you can remove the slot covers easily.
Installing and Removing Options 4-15