We seen mixing of memory of different size is working as long as all DIMM's are of same type and supported by the server. Are these DIMM's are from Dell?
You can refer "System Memory" section on page 86 of below link for more details on memory supported and guidelines for T110 II
maybe I misunderstood your question, please check the Table from shine´s link there you can see what Memory and what size you should buy and how to place them.
as shine wrote no mix config supported.
It is only a guide if you did not use all memory benches on how to plugin the Memory.
please ignore the 1 GB Memory Part because there is an X missing in the 4GB config on Slot 1 but the other parts are correct.
From the manual that Shine gave you, you could also refer from page 80 and see the table I captured.
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!