The SK HYNIX 4GB 1RX16 PC4 3200AA-SC0-11 HMA851S6DJR6N-XN NO AC is a DDR4 SO-DIMM memory module manufactured in South Korea by SK hynix. This single module provides 4GB of RAM capacity for servers or other high-performance computing systems. With its compact SO-DIMM form factor, it is ideal for use in servers and networking equipment where space is limited but reliability and speed are crucial. Designed for use in demanding enterprise environments, this memory module ensures high performance and stability for a wide range of applications.