If you look at the "Compare Surface Models" section below the "Tech Specs" section, you'll see the following listed under Surface Studio in the last group title

If you look at the "Compare Surface Models" section below the "Tech Specs" section, you'll see the following listed under Surface Studio in the last group titled Ports: Four full-size USB 3.0 Ultra-High Speed Full-size SD card reader Headset jack Mini Displayport Ethernet