Lenovo Converged HX Series Installation And Service Manual page 220

Gen1/Gen2 settings can be configured via F1 Setup -> System Settings -> Devices and I/O
Ports -> PCIe Gen1/Gen2/Gen3 Speed Selection.
3. If the error recurs, remove the adapter and restart the system. If the system reboots successfully
without the adapter, replace that adapter.
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Lenovo Converged HX3710, HX2710-E, HX3710-F Type 8689, Lenovo Converged HX Enclosure Type 5495 Installation and Service Guide