That model indicates it's n 11th gen Dell, which is not supported for anything 6.5 or newer. You MIGHT be able to get it installed and running, but it's not on the HCL. You could always leave it 6.0 and do an embedded ESXi installation of 6.7.
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Technically, 6.5 is NOT supported by VMware\Dell in case of issues like PSOD.
Since this is in your LAB, I wouldn't be too concerned about support.