Western Digital WD Red Pro 18TB NAS Hard Drive

4-Port Extended 4-Port Int 12GB HBA SAS/SATA to X8 PCIE 4.0 Low Profile

ATTO Technology Part# ESAH-1244-GT0

SAS / SCSI / RAID Controllers – SAS Controller - 8 Total Number of SAS Ports - Plug-in Card - ESAH-1244-GT0 - Storage System - Server - 12Gb/s SAS Controller Type - PCI Express 4.0 x8 - 4 SAS Ports (Internal) - 4 SAS Ports (External)