Configure your Mac Pro
You can configure the expansion cards and SSD Modules in your Mac Pro. You can also use the internal USB-A port and internal SATA ports to connect accessories.
Note: If you have a Mac Pro rack workstation, see Configure your Mac Pro (Rack).
PCI Express expansion cards
7 expansion slots
1 TB (1 x 1 TB)
2 TB (1 x 2 TB)
4 TB (2 x 2 TB)
8 TB (2 x 4 TB)
WARNING: To avoid damaging internal components or the components you want to install, always turn off and then unplug your Mac Pro. Don’t attempt to open the computer or install items while it’s plugged in.
Your Mac Pro also has an internal USB-A port and 2 internal SATA ports. The internal USB-A port can be used to connect accessories and supports USB 3 and USB 2 devices at up to 5 Gbit/s. The internal SATA ports can support third-party accessories.