I want to use OctoWS2811 with the wiz820IO adapter and I need to use both the sd card and ethernet while driving leds. The CS pin for the SD card is on pin 4 which conflicts with OctoWS2811. I know I can reroute the pin but I'd rather not mess up with my adapter. Could I just use an external sd card reader (like the one pjrc sells) and connect it to the spi bus and use another pin for cs ? Would this conflct with the onboard SD reader ?

Thanks !