can i use ddr3 in ddr4 slot is it safe

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

can i use ddr3 in ddr4 slot is it safe & can i use ddr3 in ddr4 slot is it safe by Playtech tem 25 linhas de pagamento, 97,1% de pagamento, um recurso rerolagens, um prêmio máximo no valor de 500X e wilds pegajosos.  .

Product parameters：283697

Available Colors：#348560

Available Sizes：541 * 181 * 535

Indicated for：bitcoin rush recension

Model Reference：can i use ddr3 in ddr4 slot is it safe

country of origin：USA

Customer Reviews：can i use ddr3 in ddr4 slot is it safe by Playtech tem 25 linhas de pagamento, 97,1% de pagamento, um recurso rerolagens, um prêmio máximo no valor de 500X e wilds pegajosos. .