What was the first modem you ever had? How fast was it?

My brother had an acoustic coupled 300 baud modem for his C64, but that stuff was off limits to me. My first was a 2400 baud on ISA card, I bought for the family IBM XT Clone when I was maybe 13, I came up with the money with a hustle. I bought an old lionel train set at a garage sale with $20, sold it to a train shop for $100 (they probably screwed me over). It was my first pc component install, I remember setting the dip switches for the IRQ channel.