Dell PowerEdge R730xd Owner's Manual page 138

Figure 58. Removing the expansion card riser 1
1. expansion card riser 1 cage
3. riser guide-back (right)
5. expansion card riser 1 connector
Figure 59. Identifying connectors on the expansion card riser 1
1. expansion card slot 1
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2. expansion card riser 1
4. riser guide-back (left)
6. riser guide-front
2. expansion card slot 2