Dell PE R720XD Owner's Manual page 69

Figure 34. Identifying Connectors on the Expansion Card Riser 1
1. expansion-card slot 1
2. expansion-card slot 2
3. expansion-card slot 3
Figure 35. Removing and Installing the Expansion Card Riser 2
1. power connector (for GPU cards)
2. expansion-card riser 2
3. riser guide-back
4. expansion-card riser 2 connector
5. riser guide–front
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