Where do I get replacement feet for a dell keyboard, model # SK-8115? There part number is 310-7995.

SOURCE: Dell keyboard SK-8115

(That is the the Num Lock indicator, nothing to worry about.) If it is not working it is likely because USB keyboards can time some time to be recognized by windows, let the computer boot up with the keyboard connected and let sit for up to ten minutes.

Sometimes if other hardware is detected at the same time which requires drivers to be installed, windows will never proceed to installing your keyboard, however you cannot install the other drivers until you have a working keyboard. To solve this, you will need to use an older style PS/2 keyboard to get everything installed and working as they do not need to be detected.

SOURCE: how do I mute my Dell SK 8115 keyboard

What do you mean? Keyboards can't play music or sound unless you're talking about a laptop.

SOURCE: FN key on Dell keyboard (model SK-8115)

fn keys are only on laptops

Testimonial: "Thank you!"

SOURCE: Which version ( 1.1 or 2.0 and up) of USB can be

Either one should work with the Dell keyboard sk-8115 usb 1.1 and 2.0 and up is a speed used for high speed devices. (like hard drives, digital cameras, and other various high speed devices.) since the keyboard is a simple input device it is compatiable with all 3 usb protocals.
usb 1.1, 2.0 and 3.0. i hope this helps you out.
Thanks
Steven.
P.S. if it does please help rate me :)