Intel Desktop Board D850MD/D850MV Technical Product Specification
78
2.10.3 I/O Shield
The back panel I/O shield for D850MD and D850MV boards must meet specific dimension and
material requirements. Systems based on these boards need the back panel I/O shield to pass
certification testing. Figure 21 shows the critical dimensions of the chassis-dependent I/O shield.
Dimensions are given in inches to a tolerance of ±0.02 inches [±0.508 millimeters].
The figure also indicates the position of each cutout. Additional design considerations for I/O
shields relative to chassis requirements are described in the ATX specification. See Section 1.5 for
information about the ATX specification.
✏
NOTE
The illustration below is for reference only. An I/O shield compliant with the ATX chassis
specification 2.01 is available from Intel.
OM11400
0.063±0.005
[1.600±0.120]
8X R0.5 MIN
0.567
[14.400]
0.465
[11.811]
0.027
[0.690]
0.519
[13.190]
3x Dia 0.330 [8.380]
6.390 Ref
[162.300]
0.787±0.010 TYP [20±0.254]
0.039 Dia. [1.000]
0.884
[22.450]
0.276
[7.012]
0.465
[11.811]
0.567
[14.400]
1.807
[45.892]
2.079
[52.804]
3.219
[81.768]
5.010
[127.250]
4.451
[113.050]
5.732
[145.584]
0.447
[11.345]
1.195
[30.360]
0.00
0.00
Pictorial
View
4x Dia 0.125 [3.180]
0.621
[15.770]
1.89
Ref
Figure 21. I/O Shield Dimensions
✏
NOTE
The USB ports between the PS/2 and serial ports are not populated if USB 2.0 is supported.