add usb bt to ibm t23 (1.)
predem upozornuju, ze se to pokusim napsat v en, protoze co sem tak ted stravil asi 14 dni googlenim, tak sem nenasel moc informaci v anglictine, natoz v cestine, takze at jsou ty informace pouzitelny i pro ostatni.
i’m decided to implant bluetooth in to my notebook ibm t23. original CDC card (Modem+BT) is expensive and i don’t know if it works in t23 (because this modul is for higher models of ibm notebooks). so i buy relatively cheap USB BT MSI BToes2.0 and start thinking how to mount in my t23.
i’ve open my notebook and do research internal parts. first idea was connest it to UltraPort which is on the top of display, and which contains third USB port. so i measure connection between top UltraPort and connector on mainboard. finally i have wanted pins, but they are so close between us that soldering is in my humble opinion impossible.
so i measuring again if they are connected to bigger points in sorround. succes was ony half. within my research i found a datasheet of southbridge (i think) intel fw82801cam which apparently has 6 USB ports! so i am looking for the others. in the end i fount all 6 USB’s! there thea are on the rear side: two regular USBs, one USB in UltraPort on the top of display, one USB is in UltraBay connector, other in CDC Slot (probably for original CDC card with USB) and last one is at the DockingPort. so i belive that will be useful for someone. pinout of USB you find here.
and at the end i attaching some pictures with short description:
second part: add usb bt to ibm t23 (2.)