Also Graeme,

Check for missing software: Make sure you installed the latest software for 
your device. Visit the manufacturer’s website for any updates.

Check the USB hub: If the device is connected to a USB hub, make sure the 
device and the hub are the same speed. 
Connect USB 3.0 SuperSpeed devices to a USB 3.0 SuperSpeed HUB, USB 2.0 
Hi-Speed devices to a USB 2.0 Hi-Speed hub, and so on.

Ronni

> On 29 Sep 2017, at 10:58 am, Ronni Brown <[email protected]> wrote:
> 
> Hi Graeme,
> 
> Does the Keyboard show when directly connected to a USB port on the iMac?
> Does the USB Belkin Hub show in System Information > USB (under Hardware)
> And does the USB Keyboard also show?
> 
> Please supply more information on your iMac 27-inch - Model Identifier: iMac 
> 17,1 or ?
> 
> Cheers,
> Ronni
> 
>> On 29 Sep 2017, at 9:49 am, Graeme Winters <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> I did the High Sierra update last night also and it ran very smoothly
>> However I am now unable to use my keyboard.
>> My keyboard is connected to my IMac 27 via USB to a Belkin hub 
>> I have tried connecting the keyboard directly to my IMac 27 and everything 
>> appeared to be correctly connected to power.
>> 
>> Any thoughts on why the keyboard is not recognised
>> 
>> Graeme Winters
>> 3/36 Ogilvie Road
>> Mt Pleasant W A 6153
>> 0411564025           [email protected] <mailto:[email protected]>
>> 
>> Sent from my iPad
>> 
>> 
>> On 28 Sep 2017, at 15:45, Stephen Chape <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>>> Did mine this morning on my iMac 4K 21.5 inch i7 16GB RAM 500SSD.
>>> Same here …. effortless.
>>> And all is fine so far.
>>> 
>>> 
>>> 
>>>> On 28 Sep 2017, at 1:33 pm, Severin Crisp <[email protected] 
>>>> <mailto:[email protected]>> wrote:
>>>> 
>>>> I have now updated my MacBook Air and iMac to High Sierra - an effortless 
>>>> performance.   
>>>> Two minor things noted:-
>>>>    1. Items in the Favourites of the Fides Sidebar were preserved but in a 
>>>> scrambled order
>>>>    2. Startup Items in User& Groups were cleared out, except for MacUpdate 
>>>> Desktop!  
>>>> Severin Crisp
>>>> 
>>>> 
>>>> ____________________________________________________
>>>> 
>>>>              Assoc Prof R Severin Crisp, FAIP, FIP, CPhys
>>>> 15 Thomas St, Mount Clarence, Albany, 6330, Western Australia
>>>>                   ph (08) 9842 1950 ( Int'l +61 8 9842 1950)
>>>>                            mail to: [email protected] 
>>>> <mailto:[email protected]>
>>>> ____________________________________________________
> 

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