The Kingston 4GB RAM 1Rx16 PC4-2400R-UC0-11 HP24D4U7S1MBP-4 HP P/N 854912-001 Tested is a DDR4 DRAM module designed for HP computers. With a total capacity of 4GB and a bus speed of PC4-19200 (DDR4-2400), this RAM is a reliable component for enhancing the performance of your system. The UDIMM form factor and single module design make it easy to install and compatible with various HP devices. Upgrade your computer's memory capacity with this tested and trusted RAM module.