New HP Prime not recognised by Mac Connectivity Kit

[BruceH]

I'm having a problem with my new HP Prime not being recognised by the Connectivity Kit.

I'm running HP Connectivity Kit build 2018 2 12 Rev 13443 on Mac OS 10.11.6 (El Capitan). This recognises my old (first generation) Prime as soon as it is plugged into the USB port. The new Prime (G2 in the circle on the back) isn't recognised at all.

However, it charges and System Information gives:

Quote:HP Prime:

Product ID: 0x2441
Vendor ID: 0x03f0 (Hewlett Packard)
Version: 48.50
Speed: Up to 480 Mb/sec
Manufacturer: HP Prime
Location ID: 0x24100000 / 2
Current Available (mA): 1000
Current Required (mA): 200
Extra Operating Current (mA): 0

so it isn't the cable or the socket being a bit finicky.

Any suggestions?