Hello PCnetMD,   I can't tell about the third party DIMMs but I was able to cross reference one. The Samsung you have listed, M391B1G73QH0-YK0, is compatible to the T110II. It matches our  Dell Part #:96MCT Part Desc.:DIMM,8GB,1600,2RX8,4G,DDR3L,U 8GB, RIMM, 1600MHZ, 128x64, Unbuffered, DDR3L, 240 Pin, Dual Rank, 1.35V, Error Correction Code, Low Voltage   You can find resource here, Page 86, for System Memory and installation guidelines Your system supports DDR3 ECC unbuffered memory modules (UDIMMs). Single and dual-rank DIMMs can be 1066 or 1333 MHz. Owner manual : [URL]  
I know it's antient, but I'm trying to determine if any of the following RAM modules/kits are compatible with my PE T110 II server: None of the manufacturer sites list any RAM for the Dell T110 II. Thank you, for your assistance. PCnetMD
Compatible RAM PowerEdge Dell T110 II