I have recently purchased a TI-89 Titanium graphing calc.. although there were two cables included, none of them are able to connect my calculator to my comp? wth i thought they said they included a "computer usb" cable to connect to PC.. clearly the usb cable included is not able to be fitted into the calculator(meaning the other end). Maybe i cannot find a third port on my calculator? Ionly see 2 on the top Someone help? Maybe they included wrong cable?