Supermicro Certified MEM-DR480L-HL01-ER21 Hynix Memory - 8GB DDR4-2133 1Rx4 ECC REG RoHS Supermicro certified MEM-DR480L-HL01-ER21 Hynix Memory - 8GB DDR4-2133 1Rx4 ECC REG RoHS