Crucial 8GB (2 x 4GB) 260-Pin DDR4 SO-DIMM DDR4 2133 (PC4 17000) Laptop Memory Model CT2K4G4SFS8213 Cas Latency: 15 Voltage: 1.2V Buffered/Registered: Unbuffered Features: Speeds start at 2133 MT/s Increase bandwidth by up to 30% Reduce power consumption by up to 40% and extend battery life Faster burst access speeds for improved sequential data throughput Optimized for next generation processors and platforms Available in modules up to 8GB and kits up to 32GB