Kingston memory is designed, manufactured and rigorously tested to meet the exact specifications of each brand name system. It's guaranteed to be compatible and backed by a lifetime warranty and legendary Kingston reliability. Key Features - Product Type: RAM Module - CAS Latency: CL19 - Device Supported: Desktop PC - Error Checking: Non-ECC - Number of Pins: 288-pin - Signal Processing: Unbuffered - Form Factor: DIMM - Memory Speed: 2666 MHz - Memory Size: 4 GB - Memory Technology: DDR4 SDRAM Specifications Product Type: RAM memory Capacity: 4 GB Memory Type: DDR4 SDRAM - DIMM 288-pin Upgrade Type: Generic Speed: 2666 MHz (PC4-21300) Latency Timings: CL19 Features: Dual rank, unbuffered Voltage: 1.2 V Lead Plating: Gold Chips Organization: X8 Data Integrity Check: Non-ECC Form Factor: DIMM 288-pin Lead Plating: Gold Module Configuration: 2048 x 64 Speed: 2666 MHz (PC4-21300) Technology: DDR4 SDRAM Box Contents 1 x Kingston - DDR4 - 4 GB - DIMM 288-pin - 2666 MHz / PC4-21300 - CL19 - 1.2 V - unbuffered - non-ECC