Model Name Format: DDR4 2133MHz = PC4-17000 DDR4 2400MHz = PC4-19200 DDR4 2666MHz = PC4-21300 DDR4 3200MHz = PC4-25600 DDR4 Precautions: Model: SODIMM/NON-ECC Unbuffered Installation: Plug and play (need to check compatibility) Performance: It can improve computer performance and make your computer smoother. Number of pins: 260 pinsCapacity:4GB/8GB/16GB Memory Speed:2400MHz/2666MHz CAS Latency:CL17 / CL19 Voltage:1.2V Function:Non-ECC Warranty Time:3year Warranty Not supporting desktop computers. Computer implementation is insufficient, which will lead to the lowering of the FRAYS MAXIMUM COMPATIBLE CAPACITY ≠ EACH MEMORY SLOT CAPACITY You can contact us for service support and help you evaluate compatibility. Do not confirm the order, if you have any questions, please contact us for after-sales support. Packing List: *4GB/8GB/16GB Laptop Ram x 1 pc