I just bought a used sc10 really cheap and it comes with this esc and a x-car 10.5 turn motor. Where can I find a programming card for this esc? Thanks!

hobbyking.com/hobbyking/store/__40295__Turnigy_Multifunction_LCD_Program_Box_for[/url] _Brushless_ESC.html

You can also purchase a USB adapter instead:
hobbyking.com/hobbyking/store/__31858__USB_Programming_Adapter_for_Hobbyking_X_C ar_120A_60A_ESC.html[/url]

Then on that page click Files and download the "Hobbywing_USB_Link_V3" software then install it. Plug USB adapter and battery to the ESC and program via PC.

Or you can just get the hobbywing program box. Yes it works