- Expansion Slots Types
- Expansion Port Vs Expansion Slot
- Expansion Slots Motherboard
- Expansion Slot Definition
I installed a tango express PCIe card in my mac pro 2.66. The instructions said that the expansion slot utility would open when I started the computer. Nothing opened, and there is no expansion slot utility in the utilities folder. I'm using 10.4.8. Is this an obsolete utility for this version, or is it located somewhere else. The usb ports seem to work but the firewire ports don't work as I expected. (Only 1 port will work at a time and even one port won't work properly in conjunction with the built in ports. I'm using them with MOTU audio interfaces)
- Apple resurrects Expansion Slot Utility for 2019 Mac Pro. By Andrew O'Hara Monday, July 01, 2019, 12:50 pm PT (03:50 pm ET) The updated 2019 Mac Pro brings back Apple's Expansion Slot Utility app.
- Managing PCI-express slots in Mac Pros. Mac Pro computers come with three unused PCI-express expansion slots for adding extra graphics cards, RAID controllers, multimedia, and I/O controllers.
Expansion Slots Types

Expansion Port Vs Expansion Slot
Mac Pro Expansion (MPX) Modules can use up to two slots each — in slots 1-2 and slots 3-4. Mac Pro comes with the Apple I/O card preinstalled in slot 8 which contains two Thunderbolt 3 ports, two USB-A ports, and a 3.5 mm headphone jack. Learn about PCIe cards you can install in your Mac Pro (2019).
Expansion Slots Motherboard
macpro 2.66, Mac OS X (10.4.8), Sonnet tango express PCIe card
Expansion Slot Definition
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