APPENDIX J19 / J21 – Standard SATA Interface Pin # 1 2 3 4 5 6 7 Signal Description Ground Tx+ TxGround RxRx+ Ground J23 – PS2 KB/MS Pin # 1 2 3 4 5 6 40 Signal Description KBDATA MSDATA Ground +5VSB KBCLK MSCLK WMP-153 User’s manual