You can check if the memory matches Memory specifications for the T320 pages 67-70
If you like to post a picture of the Dell DIMM label I can check for compatibility of the part number.
Dell -Charles R
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Your memory have a HP Sticker. Asking if HP memory works in the Dell Forum is somewhat funny
You need to check if Dell 11Gen Server are used DDR3 for and 12Gen. DDR4 for example. If both are the same just check the DIMM slots if it fits.
12Gen was Intel Nehalem/Westmare. (3Channel memory interface?)
14Gen was Sandybridge/ Ivybridge?
I have my doubt that they are compatible.