5-9
Chapter 5: Chassis Setup and Maintenance
Permanent and Optional Standoffs
Standoffs prevent short circuits by securing space between the motherboard and
the chassis surface. The SC523 chassis includes permanent standoffs in locations
used by most motherboards.
Some motherboards require additional screws for certain CPUs, heatsinks, and
other components. Optional standoffs are included for these motherboards. To use
an optional standoff, screw the standoff into the chassis in the use the optional
standoff in the same manner as the permanent standoffs.
Motherboard Installation
Once the air shroud, hard disk drive tray, DVD or CD-ROM have been removed
and any additional standoffs have been placed, the motherboard may be installed
in the chassis.
Installing the Motherboard
Review the documentation that came with your motherboard. Become familiar
with component placement, requirements, precautions, and cable connec-
tions.
Disconnect the chassis from the power source and open the chassis cover.
As required by your motherboard, install standoffs in any areas that do not
have a permanent standoff.
Lay the motherboard on the chassis aligning the permanent and optional
standoffs. In addition, make sure the motherboard aligns with the I/O shield.
Secure the motherboard to the chassis using the rounded, Phillips head
screws.
1.
2.
3.
4.
5.
Figure 5-7: Motherboard Standoffs and Motherboard Pan Head Screw
Flat head
M4 x 4 mm
[0.157]
RAIL
Round head
M4 x 4 mm
[0.157]
Flat head
M5 x 12 mm[0.472]
Washer for M5
DVD-ROM CD-ROM FLOPPY DRIVE
Flat head
6-32 x 5 mm
[0.197]
Pan head
6-32 x 5 mm
[0.197]
Round head
3 x 5 mm
[0.197]
Pan head
6-32 x 5 mm
[0.197]
M/B
Flat head
6-32 x 5 mm
[0.197]
HARD DRIVE
Thumb screw
6-32 x 5 mm [0.197]
M/B standoff
6-32 to 6-32
M/B STANDOFFS
M/B (CPU) standoff
M5 to 6-32
Round head
2.6 x 5 mm
[0.197]
Flat head
M4 x 4 mm
[0.157]
RAIL
Round head
M4 x 4 mm
[0.157]
Flat head
M5 x 12 mm[0.472]
Washer for M5
DVD-ROM CD-ROM FLOPPY DRIVE
Flat head
6-32 x 5 mm
[0.197]
Pan head
6-32 x 5 mm
[0.197]
Round head
3 x 5 mm
[0.197]
Pan head
6-32 x 5 mm
[0.197]
M/B
Flat head
6-32 x 5 mm
[0.197]
HARD DRIVE
Thumb screw
6-32 x 5 mm [0.197]
M/B standoff
6-32 to 6-32
M/B STANDOFFS
M/B (CPU) standoff
M5 to 6-32
Round head
2.6 x 5 mm
[0.197]
