ZA4000NM10002 Seagate IronWolf 125 4 TB Solid State Drive - 2.5" Inter
Amazon.com: Seagate IronWolf 125 SSD 4TB NAS Internal Solid State Drive - 2.5 Inch SATA 6Gb/s speeds of up to 560MB/s, 24x7 performance with Rescue Service (ZA4000NM1A002) : Electronics