Description

UGREEN 45520 11-in-1 USB-C Hub (CM639)

The UGREEN 45520 USB-C hub converts a single USB-C port into eleven simultaneous connections — 4K@60Hz HDMI display output, 1080p VGA output, two USB-C 10 Gbps data ports, one USB-A 10 Gbps data port, one USB-A 5 Gbps data port, Gigabit Ethernet, SD and Micro SD card slots, a 3.5mm audio output, and 100W pass-through charging — without requiring any driver installation. It targets professionals, educators, and mobile workers who need both modern and legacy display connectivity, audio output, and high-speed data ports from one portable hub. Additionally, the simultaneous HDMI and VGA capability makes it practical for environments that mix current monitors with older projectors, while the 3.5mm port restores headphone access on laptops that lack a dedicated audio jack.


Technical Specifications

Connectivity
Port Specification
Host Input 1× USB-C Male — integrated cable
HDMI 1× HDMI 2.0 — up to 4K@60Hz; also 2K@60Hz and 1080p@120Hz
VGA 1× VGA — up to 1080p@60Hz (analogue); simultaneous with HDMI on Windows
USB-C Data (×2) USB 3.2 Gen 2 — 10 Gbps each; data only — no video, no charging
USB-A Gen 2 (×1) USB 3.2 Gen 2 — 10 Gbps; data only
USB-A 3.0 (×1) USB 3.0 (USB 3.2 Gen 1) — 5 Gbps; data only; backward compatible with USB 2.0/1.1
RJ45 Ethernet 1× Gigabit — auto-negotiation 10/100/1000 Mbps
USB-C PD Up to 100W input / 95W pass-through; PD 3.0; charging only
SD Card 1× Full-size SD — SD 3.0, up to ~170 MB/s; simultaneous use with TF
TF / Micro SD 1× Micro SD — simultaneous use with SD
3.5mm Audio 1× 3.5mm jack — audio output only; no microphone support
Video Output
Parameter Value
HDMI Version HDMI 2.0
HDMI Maximum Resolution 4K@60Hz (3840×2160); also 2K@60Hz, 1080p@120Hz
VGA Maximum Resolution 1080p@60Hz (1920×1080)
Simultaneous Output HDMI + VGA — both active at the same time
Windows Display Modes Mirror and Extended (HDMI + VGA simultaneously)
macOS Display Modes Mirror mode only when dual outputs are active
Power
Parameter Value
PD Input Up to 100W (PD 3.0)
PD Pass-Through Up to 95W (5W reserved for hub)
PD Standard USB PD 3.0
Physical
Parameter Value
Model CM639 / SKU 45520
Dimensions Approx. 148 × 65 × 18 mm
Housing Aluminium alloy
Colour Space Grey
Driver Required None — plug-and-play
USB Port Speed Tiers
Port Standard Speed Best Use
USB-C Data (×2) USB 3.2 Gen 2 10 Gbps NVMe enclosures, fast SSDs
USB-A Gen 2 (×1) USB 3.2 Gen 2 10 Gbps External hard drives, fast flash drives
USB-A 3.0 (×1) USB 3.2 Gen 1 5 Gbps Keyboards, mice, USB receivers, standard drives
Compatibility
Platform Dual Display Mode
Windows 10 / 11 HDMI + VGA extended or mirror — full support
macOS (all versions) Mirror mode only when using both HDMI and VGA
Linux Yes — plug-and-play
ChromeOS Compatible
iPadOS Compatible USB-C iPad models
Compatible Devices MacBook Pro/Air, Dell XPS, ThinkPad, HP Spectre/EliteBook, ZenBook, Surface, iPad Pro (USB-C)
What This Model Does Not Include
Feature Status
Microphone input 3.5mm is audio output only
Second HDMI port Single HDMI — see SKU 15534 or 45380 for dual HDMI models
DisplayPort Not included

Use Cases and Applications

Mixed-Display Presentation Environments

Meeting rooms, university lecture halls, and corporate training spaces commonly combine a modern HDMI display with a legacy VGA projector. The UGREEN 45520 connects to both simultaneously — HDMI driving a 4K@60Hz main screen while VGA feeds the projector at 1080p in extended mode on Windows. Furthermore, the two 10 Gbps USB-C ports handle a USB-C SSD for presentation files and a USB-C webcam, while the USB-A 3.0 port accommodates a wireless presenter remote.

Home Office and Remote Work Setups

Remote workers consolidate HDMI monitor output, wired Ethernet for a stable VPN connection, 3.5mm headphones for calls, and laptop charging through a single USB-C cable. The 10 Gbps USB-A port handles a fast external drive for backup, while the 5 Gbps USB-A port connects a keyboard or mouse receiver. Consequently, just two cables connect to the desk — the hub cable and the Ethernet cable.

Photography and Videography Workflows

The simultaneous SD and TF card reading at up to ~170 MB/s accelerates dual-format media ingest — a camera SD card and a drone Micro SD import at the same time, feeding an NVMe enclosure via the 10 Gbps USB-C port. The HDMI output connects to a reference monitor for colour review during ingest, and the 3.5mm port handles monitoring headphones for audio review.

Audio-Output on Ultrabooks and Tablets

Many thin laptops and USB-C tablets have removed the 3.5mm headphone jack. The 45520 restores wired headphone connectivity directly through the hub, removing the need for a separate USB audio adapter. This is additionally practical for iPad Pro users who want to use wired earphones while connecting to an HDMI display and charging simultaneously through one USB-C port.

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