The Dell USB-C Mobile Adapter DA300 is a compact, 6-in-1 wired docking station designed primarily for Dell systems, featuring a retractable coaxial cable and no external drivers required for plug-and-play operation.

Ports and Connectivity

Host Interface: USB 3.2 Gen 2 (3.1 Gen 2) Type-C
Video Outputs: 1x HDMI 2.0, 1x DisplayPort, 1x VGA (supports 4K resolution at 60Hz on select models; otherwise defaults to 30Hz)
Data Ports: 1x USB-C (USB 3.1 Gen 2) and 1x USB-A (USB 3.1 Gen 2) for up to 10 Gbps transfer speeds
Network: 1x Gigabit Ethernet (RJ-45) supporting 10/100/1000 Mbit/s
Power Source: USB-powered (pass-through charging is not supported)
Performance and Compatibility

Display Support: Single display only (only one video output can be active at a time)
Operating Systems: Windows 10/7/8/8.1 and macOS (tested with High Sierra/Sierra)
Dell Business Features: Includes MAC address pass-through, PXE Boot, and Wake-on-LAN when paired with compatible Dell systems
Physical Specs: 80 g weight, 69.8 x 69.8 x 24.5 mm dimensions
Important Limitations

When connected to a 7.5W USB-C port, only one downstream USB port (USB 2.0, 480 Mbps) is available, shared on a first-come, first-served basis.
Full USB 3.1 Gen 2 (10 Gbps) speeds require a Thunderbolt or 15W USB-C host port.
Compatible with various Dell Latitude, XPS, Precision, and Inspiron models supporting DisplayPort Alt-Mode 1.3 or higher.