Apple Mac 8600 - Manual (Page 226)

Upgrades PCI Card - 3
1 Carefully lay the
computer on its side.
2 Using a Phillips
screwdriver, unscrew
the PCI card cover and
remove it.
Note:
To install a PCI
card in the bottom slot in
a WS 9650, you may
need to disconnect the
Ultra SCSI cable from
the Ultra SCSI card and/
or any lower drives that
may be present.