HP Z Turbo Drive G1 N8T12AT M.2 (22x80) 512GB PCI-Express 3.0 x4 Internal Solid State Drive 4KB Random Read: Up to 105,000 IOPS 4KB Random Write: Up to 75,000 IOPS Max Sequential Read: Up to 2150 MBps Max Sequential Write: Up to 1550 MBps Controller: AHCI