Dual Mini 6 Pin to 8 Pin PCI Express Video Card Power Supply Cable for Mac Pro (1.1) (2.1) (3.1) (4.1) (5.1) PCI-e GPU Power Cable 30 cm

iHaospace Dual Mini 6 Pin to 8 Pin PCI-e Y Splitter Power Adapter Cable for Mac Pro Video Card Power Cable 30CM

OWC - Accelsior S - 2.5-inch SATA 6G to PCIe Adapter Card for Mac Pro (2006-2012), Mac Pro (Late 2019 - Current), and PC Towers

OWC Mount Pro - 2.5-inch Drive Sled for mounting a 2.5-inch drive in Mac Pro (2009-2012, "Nehalem" or "Westmere" Models)