WD 12TB Ultrastar Enterprise 3.5" SATA, 256MB Cache, 5 Years Warranty Classification_ram-ddr3l-1600-lrdimm-32gb-1x-qr M391B5273CH0-YH9 Capacity 4GB (1x 4GB)

M391B5273CH0-YH9 Capacity 4GB (1x 4GB) Brand Samsung Speed DDR3L-1333 - 1333MT/s - PC3L-10600 Voltage 1

PowerVault MD1200

HMT351S6BFR8C-G7 Capacity 4GB (1x 4GB) Brand Hynix Speed DDR3L-1066 -1066MT/s - 1067MT/s - PC3L-8500 Voltage 1

Why is the speed of this RAM kit shown as 400 MT/s instead of 400 Mhz

RAM1832 Capacity 16GB (1x 16GB) Brand Samsung Speed DDR4-2133 - 2133MT/s - PC4-17000 Voltage 1

WD 12TB Ultrastar Enterprise 3.5" SATA, 256MB Cache, 5 Years Warranty Classification_ram-ddr3l-1600-lrdimm-32gb-1x-qr M391B5273CH0-YH9 Capacity 4GB (1x 4GB)The Ultrastar DC HC310 is designed for traditional storage and server applications as well as distributed and scalable computing, including block and file storage architectures, providing economical capacities, fast 7200 RPM performance and lower $ unit acquisition cost to help ease budget constraints. Cloud applications and distributed file systems like Apache Hadoop to support Big Data analytics Bulk storage using Object storage solutions like Ceph