Two SDRAMs in this listing.This product is a PAIT OF SK Hynix 4GB 1Rx16 PC4-2400T-SC0-11 DDR4 SODIMM SDRAM RAM modules. Each module has a total capacity of 4GB and is designed with ECC memory features. The form factor is SO-DIMM, making it suitable for laptops and other small form factor systems. With a bus speed of PC4-19200 (DDR4-2400), these modules provide fast and reliable memory performance. Manufactured by SK hynix, a trusted brand in memory technology, these RAM modules come with a lifetime warranty and are proudly made in Korea, South. Ideal for upgrading or replacing existing memory modules in computers, these SK hynix DDR4 SDRAM modules ensure high performance and durability.