On windows, the easiest way is trying to open COM1, COM2 in sequence and see whether open succeeded. If you'll enumerate more than 10 ports, you should name them as \\.\COM10<file://./COM10> etc. From: Boost-users <boost-users-bounces@lists.boost.org> On Behalf Of Tim Burgess via Boost-users Sent: Wednesday, September 5, 2018 12:46 To: boost-users list <boost-users@lists.boost.org> Cc: tim@raisedbar.net Subject: [Boost-users] ASIO? Hi, I'm looking for a mechanism allowing me to enumerate serial (Com) ports on Windows/Mac. I also need to be able to retrieve the name of a given serial device. I've had a quick look at boost::asio, but it isn't clear to me if it can do what I want. I'd be grateful for any advice, including alternatives if boost and/or ASIO aren't up to the job. Best wishes. Tim Burgess Raised Bar Ltd. E: tim@raisedbar.net<mailto:tim@raisedbar.net> M: +44 (0)7989 486976