I recently had a mifi replaced. I packed the old one as suggested. However, the directions said to place the Fedex return label on the box and take to any Fedex pickup location. I peeled the label and stuck it on the box and took it to a Fedex drop off. The gentleman looked at the label and said; "Sir, this is a USPS label, not a Fedex label." Sure enough, I looked closely at the label and it is USPS. I took the box to a Post Office and shipped it, keeping a receipt for proof of shipment. There is a warning of a possible $500 plus fee for this device if it is not back to you (someone) within five days. I have my shipping receipt, so I should be ok. Just wondering why your directions clearly state FEDEX for return shipping and yet the label in the box was a USPS label???? Thanks!