Exclamation [Q] TRRS jack

Hello

What do you think about this TRRS adapter ? http://cgi.ebay.co.uk/ws/eBayISAPI.d...X:eRTM:GB:1123

Will it work with SII I9100 ?
Galaxy SII 4.0.4 XWLPY with busybox root + Extended 2000mAh battery