
UGREEN 10-in-1 USB-C Hub with Dual HDMI | 45380
The UGREEN CM639 (item 45380) is a 10-in-1 USB-C hub in an aluminium case, made for a multi-screen desk. From one USB-C port it adds two HDMI outputs up to 4K@60Hz each, Gigabit Ethernet, SD and TF card readers, three 10Gbps data ports, one 5Gbps USB-A port and a USB-C Power Delivery port with up to 100W input.

Two HDMI outputs, up to 4K@60Hz each: Connect two external monitors to your laptop through a single cable. On Windows the hub uses MST, so the two monitors can show different content (extended mode).
Gigabit Ethernet: The RJ45 port gives a wired network connection at up to 1000Mbps, which is more stable than Wi-Fi for video calls and large downloads.

Fast data ports: Two USB-C 3.2 ports and one USB-A 3.2 port run at up to 10Gbps, and one more USB-A 3.0 port runs at 5Gbps, so you can connect fast drives together with a keyboard, mouse or flash drive.
SD and TF card readers: Import photos and videos straight from a camera SD card or a microSD (TF) card without a separate card reader.
100W PD charging: Plug your USB-C charger into the PD port to keep the laptop charging while you use the screens and other ports.
Who it's for / Works with
Laptops with a USB-C port that supports video output, especially Windows laptops that need two extended screens.
Good to know
On macOS the two HDMI outputs show the same image (mirror mode), because macOS does not support MST extended displays through this kind of hub. Video output needs a USB-C port with DisplayPort Alt Mode. The charger is not included.
Technical Specifications
| Model | CM639 |
| Item Number | 45380 |
| Input | USB-C |
| HDMI | 2 x HDMI, up to 4K@60Hz each |
| USB-C Data | 2 x USB-C 3.2, up to 10Gbps |
| USB-A | 1 x USB-A 3.2 (10Gbps), 1 x USB-A 3.0 (5Gbps) |
| Ethernet | RJ45, 10/100/1000Mbps |
| Card Readers | SD + TF (microSD) |
| Power Delivery | USB-C PD input, up to 100W |
| Multi-Display | MST extended mode on Windows; mirror on macOS |
| Housing | Aluminium |
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