Buy Kingston KVR32S22S6/4BK 4GB DDR4 Memory Module Brand: Kingston ValueRAM Capacity: 4GB Memory Type: DDR4 SDRAM Speed: 3200 MHz (DDR4-3200/PC4-25600) Latency: CL22 Voltage: 1.20 V Error Correction: Non-ECC Buffering: Unbuffered Form Factor: 260-pin SoDIMM Warranty: Lifetime Warranty