Macintosh PowerBook 165 (1993)
The 165 added a 33 MHz processor and larger standard hard drive. Along with the PowerBook 145B, this would be the last of the true 100 series PowerBooks and the last Apple laptop to include two serial (printer and modem) ports. Its entry level descendant, the PowerBook 150, would continue to sell for another year and though it used the 140 case design, its internals were actually based on the PowerBook Duo and PowerBook 190, a 100-series PowerBook in name only as it used the PowerBook 5300's motherboard and case as well.
via Wikipedia: http://en.wikipedia.org/wiki/PowerBook_160