In a major push for the in-store point-of-sale market, PayPal said Wednesday that it's launching its Zettle POS system in the US two years after acquiring the Swedish fintech company for $2.2 billion.

PayPal has launched Zettle in the U.S. — but it's not the same product PayPal bought just three years ago. Zettle, formerly iZettle, launched in 2010 in Stockholm as a local rival to Square's mobile ...