This model is the Samsung PM9A3 3.84TB Data Center SSD, a 2.5-inch 7mm enterprise NVMe drive running over a PCIe Gen4 x4 interface, rated by Samsung at up to 6800MB/s sequential read and 4000MB/s sequential write, with random performance rated at up to 1,000,000 read IOPS and 180,000 write IOPS — figures aimed squarely at demanding, high-transaction server workloads rather than consumer or even prosumer use. At 3.84TB it's suited to database servers, virtualization hosts and other data-centre applications where consistent, high-IOPS performance under sustained load matters far more than headline sequential-speed numbers on a spec sheet. The slim 7mm 2.5-inch form factor is standard for high-density server storage bays, letting more drives fit in the same rack space than a thicker U.2 drive would allow. As part of Samsung's PM-series enterprise line, it's built to data-centre-grade reliability and endurance standards rather than a consumer SSD's specification.