Romaine Sawyers has signed a two-year deal at Cardiff.
The 30-year-old was available after leaving West Brom after three seasons at the Hawthorns.
Sawyers told Cardiff City TV: “It’s good to finally get it over the line. I spoke to the gaffer (Steve Morison), he explained the product that he’s got, and I feel like I want to be a part of it.
“The staff have been very welcoming, the players have been very welcoming, and it’s good to be back within a team.
“We’ve got a lot of young, energetic players. I’m one of the more senior ones, who is going to be here to try and add a bit of experience and know-how of the league.
“I like to get on the ball, and I want to get the team playing. I’ll try and chip in with a few goals and assists, and I like to bring others into play and put them in dangerous positions.”
