Amotherboard has four dimm slots; three slots are gray and the fourth is black. what type of memory is this board designed to use?

A motherboard will require DDR3 type of memory.

Explanation:

In the motherboard, we use DDR3 RAM. It stands for "Double Data Rate 3" full name of this ram is DDR3 SDRAM where SDRAM stands for "Synchronous Dynamic Random-Access Memory". It was firstly implemented in the 1970s.

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