I don't think there is a direct cable, since you need a serial to USB converter. (It's not a miniUSB on the switch, it's RS232, just with miniUSB connector). I belive Brocade will ship USB-C to USB cables with ICX7150 series though.
So basically you need USB to RS-232 http://www.aten.com/global/en/products/mobility-&-usb/usb-converters/uc232a/
Then DBF9 to RJ45 https://www.amazon.com/Scs232-Serial-Adapter-RJ45f-Db9f/dp/B000067VFY
To which you can plug yout RJ45 to miniUSB cable
#donglelife