Technical Reference
63
2.9.2 I/O Shield
The back panel I/O shield for the board must meet specific dimension and material
requirements. Systems based on this board need the back panel I/O shield to pass
certification testing.
Figure 22 shows the I/O shield for boards with the optional PS/2
connectors.
Figure 23 shows the I/O shield for boards without the optional PS/2
connectors. Dimensions are given in millimeters [inches]. The figure indicates the
position of each cutout. Additional design considerations for I/O shields relative to
chassis requirements are described in the BTX specification.
NOTE
The I/O shield drawing is for reference only. I/O shields compliant with the BTX
specification are available from Intel.
169.98 +0.12/- 0.13
[6.692 +0.004/- 0.005]
172.93 REF
[6.808]
13.00 TYP
[0.512]
39.89 +0.12/- 0.13
[1.570 +0.004/- 0.005]
42.84 REF
[1.687]
13.50
[0.532]
3.530
[0.139]
0.00
[0.000]
4.157
[0.1636]
7.945
[0.3128]
1.00
[0.039]
6.09
[0.0240]
0.00
[0.000]
10.728
[0.4224]
9.18
[0.36]
9.18
[0.361]
11.55
[0.455]
71.877
[2.8298]
90.336
[3.5565]
110.582
[4.3536]
140.389
[5.5271]
51.86
[2.04]
OM18410
Figure 22. I/O Shield Dimensions for Boards with PS/2 Connectors