Expansion Board(S); Removing The Minitower Cover - NEC POWERMATE 4100M Service Manual

3-4 Options
3. Slide the top cover toward the rear about one inch (see Figure Section 3-6).
4. Lift the top cover up and aff the system unit.
Figure Section 3-6 Removing the Minitower Cover

Expansion Board(s)

There are five ISA 8/16-bit expansion slots on the ISA backboard. One of the five is an
ISA/VL-Bus expansion slot. Two of the expansion board slots are occupied by the sound
board and fax/modem board. Expansion boards plug into the edge connector on the back-
board. See Appendix A for ISA connector pin assignments.