I love this keyboard because of the large Delete Key but hate that it doesn't have a light to let me know when the NUM LOCK and/or the CAP LOCK key is ON. If you have depressed the NUM LOCK key and tried the key pad and it doesn't work then try to depress it again. Sometimes I have had to toggle the Num Lock OFF and ON a couple of times to get it to work.
YES NANO KEYBOARD LEARNS MULTIPLE DEVICES SO CAN SUBSTITUTE OTHER DEVICE. DOWNLOAD LOGITECH SOFTWARE TO CHANGE DEVICES INSTALLED. USE WIRED MOUSE OR SEPARATE WIRELESS MOUSE AND RECIEVER
There is a minor curve for the fingers to the main keys, but it's not very noticeable, might wanna try another if your looking for a more deep seated feel.