It's a 2013 T430u with an Intel Centrino Wireless-N 2230 chip. It only supports 2.4 GHz, and not 5 GHz. I use a second, external USB WiFi dongle for Wireshark and other uses. It's six years old and great to use for more than I thought it would be.
If you’re looking for something bigger for aircrack etc I use al alfa networks “AWUS036NHA” which is 5dB and you can pick up off amazon for about 30 euro.
For normal dongles a search for “Anadol Gold Line Wifi AWL150 Micro 150Mbit/s USB WLAN S” shows the one I use in various bsds/linuxes with no problems.
It depends on your needs and budget. I picked up a Netgear dongle years ago for $25 that still works fine. Just Google for your linux distro, netgear, and wireshark to find any gotchas.
