HP EliteBook 820 G3
USB 3.0 charging port
USB 3.0 port
USB basic type-C
HP 2013 UltraSlim Docking Station
3 USB 3.0 ports, 1 USB 3.0 charging port
2 DisplayPort 1.1a (DP 1.2 capable)
Dell U2415 Monitor
1920 x 1200 at 60Hz
2 HDMI(MHL) connector
1 Mini DisplayPort
1 DisplayPort (version 1.2)
1 DisplayPort out (MST)
1 Audio Line out (connect your speakers)
5 USB 3.0 ports – Downstream (5 at the back, 1 with battery charging)
1 USB 3.0 port – Upstream
USB-C (USB Type-c) 一定是USB 3.1吗?
USB Type-C isn’t the same thing as USB 3.1, though. USB Type-C is just a connector shape, and the underlying technology could just be USB 2 or USB 3.0. In fact, Nokia’s N1 Android tablet uses a USB Type-C connector, but underneath it’s all USB 2.0—not even USB 3.0. However, these technologies are closely related. When buying devices, you’ll just need to keep your eye on the details and make sure you’re buying devices (and cables) that support USB 3.1.
SinceUSB 2.0 and USB 3.0 ports may coexist on the same machine and they look similar, the USB 3.0 specification recommends that the Standard-A USB3.0 receptacle have a blue insert (Pantone 300C color).