IBM System x3690 X5 At-A-Glance Reference Manual page 3

Figure 4 shows the locations of key components inside the server.
Figure 4. Inside view of the IBM System x3690 X5
Figure 5 shows the MAX5 optional memory expansion unit.
Figure 5. Inside view of the MAX5 optional memory expansion unit for the IBM System x3690 X5
IBM System x3690 X5 3