UGREEN HUB CM639 multiport USB-C hub — HDMI 4K@60Hz, VGA, 2× USB-C 3.2 10Gbps, 2× USB-A, SD/TF, RJ45, AUX 3.5mm, USB-C PD 100W

UGREEN HUB CM639 is a compact multiport USB-C hub that expands a laptop or tablet with a broad set of connectivity options: HDMI output up to 4K@60Hz, VGA output, two USB-C 3.2 ports (10 Gbps), two USB-A ports, SD and TF card readers, Gigabit RJ45 Ethernet, a 3.5 mm audio jack and a USB-C PD port supporting up to 100W. The adapter combines wired network access, high-resolution external display support, fast data transfer and high-power pass-through charging in a single compact accessory designed for productivity, presentations and media playback.

Advantages

The hub provides simultaneous support for multiple displays and devices while keeping a small footprint. High-speed USB-C 3.2 ports and USB-A ports enable fast file transfers and connection of peripherals, while the SD and TF card readers simplify direct media access from cameras and storage cards. The integrated Gigabit Ethernet port offers stable wired network connectivity, and the 100W PD port allows charging of compatible laptops without sacrificing hub functionality. The presence of both HDMI 4K@60Hz and VGA outputs ensures compatibility with modern displays and legacy projectors.

Suitable for

• Connecting a laptop or tablet to an external 4K monitor or Full HD projector for work or presentations
• Fast transfer of photos and videos from SD/TF cards to a computer
• Stable wired network connection in environments with weak Wi‑Fi
• Connecting multiple USB peripherals such as external drives, keyboard and mouse
• Charging a laptop while using external displays and peripherals

Key specifications

• HDMI output: up to 4K@60Hz
• VGA output: up to 1080p (Full HD)
• USB-C host/data ports: 2× USB-C 3.2, up to 10 Gbps each
• USB-A ports: 2× USB-A (USB 3.x speed class for peripherals and storage)
• Card readers: SD and TF (microSD) slots
• Ethernet: Gigabit RJ45 (1000 Mbps)
• Audio: 3.5 mm AUX jack for headphones or speakers
• Power delivery: USB-C PD pass-through up to 100W
• Form factor: compact, portable multiport adapter

How to use

Connect the hub to a USB-C port on your laptop or tablet that supports data and video output. Attach an external display using the HDMI or VGA port depending on the monitor or projector available. Use the USB-C 3.2 and USB-A ports to connect external drives, input devices or other peripherals. Insert SD or TF cards directly into the card slots to access media files. Plug an Ethernet cable into the RJ45 port for wired network access. If you need to charge the host device, connect a USB-C PD charger to the hub's PD port; the hub supports pass-through charging up to 100W while other ports remain active.

Usage recommendations

For best results, use the HDMI port and a host USB-C port that supports DisplayPort Alt Mode when connecting a 4K@60Hz monitor. When using multiple high-bandwidth peripherals simultaneously, use a high-power PD charger to ensure stable power delivery. If your device does not support video output over USB-C, use the hub for data, network and audio functions only.