Bests & Worsts Reviews from Amazon

I ordered it on 3/23 from Amazon and received a couple of days later. To my surprise, the box doesn't say "unifying receiver". Took the keyboard/mouse out - yes indeed the receiver only says "Nano Receiver", and it doesn't have the orange star unifying logo. I also installed Logitech Unifying software but this receiver is not recognized. UPC/Product ID all match. Appears Logitech changed the product. Amazon needs to change the product description. If you are looking for a unifying receiver to work with other logitech products, don't buy this. Update - Amazon sent me a replacement, and this time it comes with Unifying receiver. UPC and product ID printed on the boxes are identical, packagings are slightly different. One has "Unifying receiver" clearly printed on the box and feature list and the other one doesn't. http://www.amazon.com/gp/customer-media/product-gallery/B00BP5KOPA/ref=cm_cr_dp_cust_img_see_all_img0 Keyboards and mice are also different. One set both have orange star unifying on the label and the other set don't. Product IDs are different too.