I need help with cable from very old iMac to new one
Bought a new iMac24 yesterday, data transfer cable that came with it will not connect to my 2014 iMac with old USB ports. What do I need? I cannot transfer over wifi, and my back up hard drive has only the old USB plug-in which is incompatible with the new one. I have been unable Can you help?
iMac 21.5″, OS X 10.10