Hard drives of the Samsung EcoGreen F4 series, more precisely models HD204UI and HD155UI were shipped with a defective firmware that can cause loss of data under certain conditions.
As an precautionary safety measure Argus Monitor does not access S.M.A.R.T. data of these drives.
Samsung however provides a firmware upgrade to resolve this issue (Samsung Firmware Patch).
If you have installed this firmware upgrade and want to activate the S.M.A.R.T. features of Argus Monitor for these drives you can do this by entering the custom program parameter HD204UI_ENABLE in Settings / Miscellaneous / Custom Program parameters as shown in the picture below and restarting Argus Monitor.
Please make sure that you have upgraded the firmware of all Samsung HD204UI / HD155UI drives in your system beforehand!