UNIDAD SSD 1TB 2.5"+SLED macOS Sequoia/Catalina Mac Pro Mid 2010-2012 (5.1)
1TB SSD Solid State Drive. It includes ONE sled. You are buying a NEW professional level hard drive. FORMATTED and optimized ON A MAC TO RUN macOS Catalina 10.15.7 and a modified version of macOS Sequoia 15.3.1.