Dell PowerEdge R830 Owner's Manual page 104

Figure 45. Connectors on the expansion card riser 1
1. expansion card connector slot 1
Figure 46. Removing the expansion card riser 2
1. expansion card riser 2
3. riser guide (right)
5. expansion card riser 2 connector
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2. expansion card connector slot 2
2. touch point (2)
4. riser guide (left)