ST4000VM000, Z30, TK, PN 1F3168-300, FW SC25, Seagate 4TB SATA 3.5 Hard Drive
Refurbished: Seagate ST4000VM000 4TB 5900 RPM 64MB Cache SATA 3.5" Internal Hard Drive - Newegg.com
New Original HDD For Seagate 4TB 3.5" SATA 6 Gb/s 64MB 5900RPM For Internal HDD For Surveillance HDD For ST4000VX000 ST4000VM000 - AliExpress
Amazon.com: SEAGATE Video HDD ST4000VM000 4TB 5900RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Hard Drive (Certified Refurbished)- w/1 Year Warranty : Electronics