For Sale is a Logitech K520 Wireless Keyboard NO Unifying Receiver Tested Works (receiver will have to purchased Separately or you will already need one to use this keyboard)! Its In very good USED condition. Its been Tested and does work. It includes whatever is in the pictures provided. It requires 2 AA batteries. Unifying receiver Software can be downloaded from Logitechs website and you can connect up to 5 different Logitech Unifying devices to one Unifying Receiver. Please ask Any and All Questions prior to purchasing. Fast Same or Next day shipping with Free Delivery Confirmation within the U.S. Payment Due within 7 days of purchase (if you need more time please let us know In advance) we love to combine shipping is always a Yes and Most of the time Additional Items Ship for free. SKU4MS Because does not educate buyers on how to take advantage of Combined Shipping we have to. so in order to take advantage of our combined shipping rates instead of using the "buy it now" button please use the "add to cart" button for each of our items you want/plan to buy and combine into one purchase once you have finished adding all the items you want to your cart then go into your cart and you should be able to Pay for all the items together and receive our combine shipping discount or you can click "request total from seller" button and we can send a revised combined shipping invoice for all items you want to purchase. The Majority of our items you Pay one Shipping price for the First item and then there is no additional shipping cost for each additional item purchased