Retirement tax questions

I'm still wondering about the difference -- when I ask turbo tax to maximize as an individual IRA it indicates that I can deposit about $40K in to an individual IRA, when I change it to maximize for a SEP IRA it only allows for about $16K to the SEP.   Of course, I'd like to use the individual -- but when I try to get Schwab to transfer to an individual they tell me that the max is $5.5K?