Amazon.com: White Label WL 4TB 7200RPM 64MB Cache SATA 6.0Gb/s (Enterprise Grade) 3.5" Hard Drive (for Server, RAID, NAS, DVR, Desktop PC) w/1 Year Warranty : Electronics
Toshiba MG04SCA Enterprise Capacity HDD 4TB 7200RPM SAS 6Gb/s 64MB Cache 3.5" Enterprise Class Hard Drive - MG04SCA400A (4Kn) - Drive Solutions
0F22948 – NetApp 4TB 7200 RPM SAS 3.5″ HDD for DS4243, DS4246 24 bay enclosures – Disk Drive Finder
WD 4TB Ultrastar 7200 rpm SATA 3.5" Internal WDBBUR0040BNC-WRSN
Hard Disk Sata 3 Interface 1tb 2tb 3tb 4tb Brand Desktop Pc 3.5inch Internal Mechanical Hard Disk Sata 6gb/s Hdd 7200 Rpm (used) - Hard Disk Drive - AliExpress