I just bought an apple magic keyboard but the accompanying USB-C lightening port will not connect to my 2013 iMac. Is there an adapte?

I expect you're looking for something like this:

nonda USB-C to USB Adaper - Amazon

Search term "USB-C to USB adapter" for find other examples.

hcsitas wrote:

Your Magic Keyboard should have come with a cable like this https://www.apple.com/shop/product/MXLY2AM/A/lightning-to-usb-cable-1-m which connects directly to any free USB-A port on the iMac.

They are now coming with USB-C, which is different than USB A or B.

https://www.onlogic.com/company/io-hub/usb-type-c-and-usb-3-1-explained/?cpsrc=search_igel&kw=&gclid=Cj0KCQiA4b2MBhD2ARIsAIrcB-RcYeUHaRjFnhmPjgow93SJWXohqtp_rJhqrmfUlGzh43V-gRbYmMUaAiweEALw_wcB

+1. Same as mine… and you can recharge the keyboard while using it as a bonus.

Noted, thanks.

What do you mean by “accompanying USB-C lightening port”? Lightening and USB C are different things. Your Magic Keyboard should have come with a cable like this https://www.apple.com/shop/product/MXLY2AM/A/lightning-to-usb-cable-1-m which connects directly to any free USB-A port on the iMac.