I have tested a USB 2.0 mouse and a USB 3.x flash drive. The USB output of the Titan Ridge is just for USB (port 2 for USB 2.0 and port 4 for USB 3.x).
The downstream Thunderbolt port can be used for USB (port 1 for USB 2.0, port 3 for USB 3.x), DisplayPort, or Thunderbolt. The Titan Ridge is different than Alpine Ridge because it has a USB output that is separate from the two Thunderbolt outputs.
#Old mac pro for sale with no processor or ram driver#
Yes, the driver for the USB 2.0 port on my Titan Ridge dock is AppleUSBXHCITR. The audio codec probably needs a couple S2I connections to the T2 chip. There’s also the JHL7540, a pair of TI CD3217B or similar USB PD/Type-C port controllers, and possibly a Cirrus Logic CS42L83 audio codec on the card, but you can’t make out any of the part numbers. I did spy a pair of TI TUSB1002A USB 3.2 10 Gbit/s dual-channel linear redrivers on the I/O card, which would be for the USB 3.0 signals routed from the PCH to the USB Type-A ports via the proprietary portion of the I/O card connector.
Which is one too many for the PCH, so there must be a hub or additional USB 2.0 EHCI somewhere to make that work. So now you have me thinking, the C621 PCH only provides 14 USB 2.0 ports, and by my count:Ģ for the Thunderbolt 3 ports on the top of the caseĢ for the Thunderbolt 3 ports on the Apple I/O cardĢ for the USB 3.0 Type-A ports on the Apple I/O cardĤ for MPX slot 1 (up to 4 Thunderbolt 3 ports)Ĥ for MPX slot 2 (up to 4 Thunderbolt 3 ports)
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