System-board optional-device connectors
The following illustrations show the connectors on the system board for the optional devices.
Figure 1. System-board optional-device connectors
![System-board optional-device connectors](xinyi023mlk_mboption.jpg)
![System-board optional-device connectors](xinyi023mlk_mboption.jpg)
Figure 2. System-board optional-device connectors: for machine type 8871–AC3
![System-board optional-device connectors](riesling2u_mboption.jpg)
![System-board optional-device connectors](riesling2u_mboption.jpg)
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