How to check compatibility when building a computer<br>Confirm your motherboard supports the amount of ram you bought. Some older motherboards don't support more than 8 or 16 gb of ram. Check the type of ram that you need.
Motherboards made years ago only needed to support 8 or 16 gb of ram. 
The text only says "Some older motherboards don't support more than 8 or 16 gb of ram." It doesn't say why or whether that was sufficient. The model must have inferred it.
( z1 need :ARG1 ( z2 support :ARG0 ( z3 motherboard :ARG1-of ( z4 make :time ( z5 before :op ( z6 now ) :quant ( z7 multiple :op ( z8 temporal-quantity :quant 1 :unit ( z9 year ) ) ) ) ) ) :ARG1 ( z10 ram :quant ( z11 or :op ( z12 mass-quantity :quant 8 :unit ( z13 gram ) ) :op ( z14 mass-quantity :quant 16 :unit ( z15 gram ) ) ) ) ) :mod ( z16 only ) )