was actually kinda surprised, i opened the router up by taking 2 screws out of the backside foam legs. there was a micro sd card slot on the bottom and uart spots.
very professional for something you can leave in a public setting without parts going missing(maybe disable the reset button).
http://www.minihere.com/youku-yk-l1c-openwrt-dd-wrt-firmware-download.html << some of the custom firmwares that can be run.
http://www.minihere.com/youku-yk-l1-openwrt-and-ddwrt-firmware-download.html << different router from youku.