I am trying to connect an iOptron CEM25p to PHD2 for auto-guiding. I am using an Orion StarShoot Autoguider, and connecting the mount to the computer by  this cable , which contains an FTDI chip and connects between the computers USB port and the hand controller.  I am using OSX 10.13.6 with a MacBook Air with usb 3.0 ports.  How can I get the mount to communicate with PHD2 for autoguiding? Redirected from the  INDI Driver page of iOptron's website , I've downloaded the  INDI library folder , but I don't know what to do with its contents. I'm also not sure if I need to install the FTDI driver for the cable,  which I believe would be D3XX  for the USB 3.0 ports rather than  D2XX for USB 2.0 ports , or if this driver is built into OSX 10.13.6 already.  Under 'System Report'>'USB' I see the following information for my computer:  USB 3.0 Bus:  Host Controller Driver: AppleUSBXHCILPT
  PCI Device ID: 0x9c31
  PCI Revision ID: 0x0004
  PCI Vendor ID: 0x8086 Any help is greatly appreciated!

Download KStars 3.5.4 for MacOS and then use that to connect to the mount.