Worked very well with very high transfer speeds on my new iMac 4K. It was plug and play. Unfortunately, this failed after about two months. There was a difficult and agonizing call to 800. The people were friendly enough, but it took a long, long time to get through the many shifts of operators. A replacement is on the way but I had to leave a credit card pending transaction in case I didn't return the faulty unit. They didn't believe in the slightest, nor did they regret that it had failed so early. I've had good luck with Belkin products in the past. Have not seen comparable products for others.
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