Yup, I've tested it. And it works. S9 controller board, flashed with R4 autotune firmware from Bitmain's website, and a R4 hashing board.

http://i65.tinypic.com/f42r13.jpg

http://i66.tinypic.com/2hhlj4j.jpg

http://i65.tinypic.com/ob0awx.jpg

http://i65.tinypic.com/2vaicqw.jpg

http://i68.tinypic.com/6i9zxl.jpg

http://i63.tinypic.com/333y8zt.jpg