Hello my friends, I have a PC HP Pavilion, with a Intel i5 inside, my software is Windows 8.1, and I would like to improve my audio sound card because I want to have RCA jack in order to record directly from my keyboard or any external device to the computer, I'm currently using the USB port from the PC, but I don't like this to much, because it generates a peculiar noise, can any of you guys recommend an audio sound card with RCA inputs.