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Compact dark rectangular USB-C adapter with HDMI DisplayPort RJ45 two USB-A one USB-C ports

DELL

DELL DA305U 6-in-1 USB-C Modular Adapter 90 W 4K 3840 x 2160 2 USB-A 1 USB-C HDMI DisplayPort RJ-45

SKU CH-XKB1-ZG9EG MPN DELL-DA305U

A 6-in-1 USB-C adapter adding HDMI, DisplayPort, RJ-45, two USB-A and one USB-C port with 90 W power pass-through and 4K 3840 x 2160 video

  • Connect monitors at 4K 3840 x 2160 resolution via HDMI 2.0 or DisplayPort
  • Charge laptop with up to 90 W power pass-through through USB-C downstream port
  • Add two USB-A 5 Gbps ports and one USB-C port for peripherals
  • Wired network access through integrated RJ-45 Gigabit Ethernet port
  • Compact 6-in-1 adapter replaces multiple dongles for travel or desk setup

Portable 6-in-1 connectivity hub

The Dell DA305U adds six ports through a single USB-C connection. It suits mobile professionals who need video, data, wired networking and laptop charging from one compact adapter.

Dual 4K video with 90 W pass-through

HDMI 2.0 and DisplayPort each drive a 3840 x 2160 display at 60 Hz, while the USB-C downstream port handles 4K at 30 Hz with up to 90 W power delivery. Two USB-A 3.0 ports and one USB-C 3.0 port share 5 Gbps bandwidth for peripherals.

Travel-ready single-cable docking

The adapter draws host power for its own operation and passes up to 90 W to the laptop, removing the need for a separate charger. RJ-45 provides wired Ethernet where Wi-Fi is unreliable, and the short tethered cable keeps the desk tidy without blocking adjacent ports.

How it compares

Measured against everything we stock in USB-C Multiport Adapters, at today’s prices. Recalculated every night.

Price $74.99
Pricier than about 92% of the 89 comparable items (median $18.99).

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Specifications

Product
Brand nameDell
Size & build
Shipping weight0.18 kg
Package size155 × 87 × 40 mm

Questions about this item

Will this adapter work with my older laptop that only has USB-A ports?

This adapter requires a host USB-C port that supports video and power delivery, so it cannot connect directly to a legacy USB-A port.

How can I verify the adapter is delivering 4K at 60 Hz after I plug it in?

Check your display settings to confirm 3840 x 2160 resolution at 60 Hz is active on the connected monitor via DisplayPort or HDMI 2.0.

Does the box include a USB-C cable or do I need to buy one separately?

The adapter has an integrated USB-C tether; no separate host cable is required, but any monitor or peripheral cables are not included.

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