Specification: Item Type: Memory Module Model: DDR4 Material: PCB Memory Frequency: 2666mhz Voltage: 1.2V Pin Number: 288pin Compatible: Fully compatible (for Intel/for AMD) Applicable Computer: Desktop If Memory Appears: Blue screen, crash, restart, and the alarm keeps beeping, please operate according to the following methods one by one. If it fails, it is determined that it is not compatible. Try Following Methods: 1. The memory is not properly inserted, or the connecting finger is oxidized. Wipe the memory connecting finger with an eraser and then reinsert it, or change the slot; 2. The memory slot is dusty or oxidized. Clean it with a brush and wash water (if there is no wash water, just brush it) 3. The memory is not compatible, try changing the memory. 4. The CMOS is not discharged to restore the factory settings, may be normal (remove the motherboard battery, and then put it back). 5. The motherboard is not compatible with the CPU, try changing the CPU. Package List: 1 x Memory Module