Sony Ericsson K750i pinouts
The connector/pinout information may be applied to the Sony Ericsson model K750i

 Sony Ericsson J200i, J210i, J220i, J230i, J300i, J300c, J300a, K300, K500c, K500i, K508i, K600i, K608i, K700, K700i, S700, S700c, S700i, S710, S710a, S710i - T610, T630 - Z200, Z208, Z300i, Z500a, Z600, Z800i, V802SE handsfree pinout Stereo HandsFree
Sony Ericsson J200i, J210i, J220i, J230i, J300i, J300c, J300a, K300, K500c, K500i, K508i, K600i, K608i, K700, K700i, S700, S700c, S700i, S710, S710a, S710i - T610, T630 - Z200, Z208, Z300i, Z500a, Z600, Z800i, V802SE handsfree pinout Stereo HandsFree Sony Ericsson  12 pin connector (SonyEricsson Fast Port) pinout Sony Ericsson C702, C902, C905, F305, G502, G700, G705, G900, K205i, K310i, K220i,K320i, K330, K510i, K530i, K550i, K610i, K630i, K660i, K750i, K770i, K790i, K800i, K810i, K850i, M600i, P1i, P990i, R300, R306, S302, S500i, T303, T650i, T700, W200i, W300i, W350i, W380i, W550i, W580i, W595, W610i, W660i, W700i, W710i, W760i,W800i,W810i W850i,W880i, W890i, W900i, W902, W910i, W950i, W960i, W980, Z250i, Z310i, Z320i, Z530i, Z550i, Z555i, Z610i, Z710i, Z750i, Z770i, Z780i pinout. Cable is DCU-60
Sony Ericsson  12 pin connector (SonyEricsson Fast Port) pinout Sony Ericsson C702, C902, C905, F305, G502, G700, G705, G900, K205i, K310i, K220i,K320i, K330, K510i, K530i, K550i, K610i, K630i, K660i, K750i, K770i, K790i, K800i, K810i, K850i, M600i, P1i, P990i, R300, R306, S302, S500i, T303, T650i, T700, W200i, W300i, W350i, W380i, W550i, W580i, W595, W610i, W660i, W700i, W710i, W760i,W800i,W810i W850i,W880i, W890i, W900i, W902, W910i, W950i, W960i, W980, Z250i, Z310i, Z320i, Z530i, Z550i, Z555i, Z610i, Z710i, Z750i, Z770i, Z780i pinout. Cable is DCU-60 Sony Ericsson DCU-60 usb self-made cable pinout for D750i, K310a, K310i, K310c, K320i, K510a, K510i, K510c, K610i, K610im, K618i, K750c, K750i, K758c, K790i, K790c, K790a, K800i, M600i, M608c, P990i, S500, V630i, W710i, W710c, W712a, W850i, W950i, Z520a, Z520i, Z520c, Z525i, Z525a, Z530c, Z530i, Z550c, Z550i, Z550a, Z558i, Z558c, Z610i, Z710c, Z710i, W300i, W300c, W550c, W550i, W580, W600c, W600i, W700c, W700i, W800c, W800i, W810c, W810i, W830i, W830c, W900c, W900i, W958c  and some other new SE
Sony Ericsson DCU-60 usb self-made cable pinout for D750i, K310a, K310i, K310c, K320i, K510a, K510i, K510c, K610i, K610im, K618i, K750c, K750i, K758c, K790i, K790c, K790a, K800i, M600i, M608c, P990i, S500, V630i, W710i, W710c, W712a, W850i, W950i, Z520a, Z520i, Z520c, Z525i, Z525a, Z530c, Z530i, Z550c, Z550i, Z550a, Z558i, Z558c, Z610i, Z710c, Z710i, W300i, W300c, W550c, W550i, W580, W600c, W600i, W700c, W700i, W800c, W800i, W810c, W810i, W830i, W830c, W900c, W900i, W958c  and some other new SE