As known, because of the PCI initialization time.
Intel 750 SSD (PCI-E type) has a long boot time
Therefore, the same problem also occurs in U.2 type?
We would like to let you know that the Add-in-card and the SFF-8639 are both PCIe 3.0 x4 drives, the initialization process is similar for both form factors. We recommend to have the drives updated with the latest firmware update available.
We would like to know if the information provided worked for you or if you still require assistance.
We will be waiting for your response.
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