WD 4 TB USB 3.0 Objects
This is an external hard drive that provides 4TB capacity with a bigger carrier, since it is 2.5 inches and you only need a cable with a USB 3.0 connector to work. Compatible USB 3.0 and USB 2.0, and delivers 100 MB / s performance at transmission speeds, both read and write, is ideal for taking on a laptop and has 4 TB of extra capacity.
In addition, it is now very expensive and with over 100 euros available.
WD Elements Desktop 8 TB
This is a 3.5-inch version of the previous disk, and in this case it needs external power so it is thought to provide additional storage capacity for desktop PCs. In this case the available model has no less than 8 TB of capacity, and since it is connected to a computer via USB 3.0 it does not need anything else to work, it is a matter of connecting it and starting to use it.
This external hard drive is on sale, at a discount of 28%, with offers transfer speed of approximately 150 MB / s
WD My Book Duo 8 TB USB 3.1
This My Book Duo has 8 TB of total capacity and, as its name implies, contains two 3.5-inch hard drives internally, optimized for RAID 0, which with its USB 3.1 interface allows it to provide maximum transmission speed, 380 MB / s for continuous reading and 350 MB / s for continuous writing.
This drive is available with capacities of up to 28TB but the other offer is 8 TB
WD My Book 10 TB USB 3.0
This version of WD My Book is a shortened version of the previous one. It has extra capacity, because the supply unit is 10TB (available up to 14TB) and features a 3.5-inch hard drive inside. Like others, it has a USB interface (3.0 in this case) and doesn't need configuration, it's a matter of connecting it and that's it.
In this case, this hard drive provides the functionality of up to 145 MB / s read and 140 MB / s write with a USB 3.0 display which is true and backwards compatible with standard USB 2.0.
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