can i use ddr3 in ddr4 slot is it safe

can i use ddr3 in ddr4 slot is it safe Product Description：

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Product parameters：283697

Available Colors：#348560

Available Sizes：541 * 181 * 535

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country of origin：USA

Customer Reviews：can i use ddr3 in ddr4 slot is it safe é um slot (caça-níquel) online desenvolvido pela Pragmatic Play..