Tested with long and short smart tests, no errors. The Western Digital 4TB Red SATA Hard Disk WD40EFRX is a reliable internal desktop drive designed for use with laptops, PCs, and Macs. With a storage capacity of 4TB and a cache size of 64MB, this drive offers plenty of space for storing large files and data. Its 5400 RPM rotation speed ensures fast read and write speeds, while the SATA III interface provides efficient data transfer. Additionally, this drive features cloud storage integration and password protection for added security and convenience. As part of the WD RED product line from Western Digital, this hard disk has a 3.5-inch form factor and is an ideal choice for those looking for a high-quality internal storage solution
eBay