Acer USB C Hub with 4K HDMI Review
Discover the Acer USB C Hub with 4K HDMI in this witty review. Unravel electronic chaos as you explore its impressive 9-in-1 capabilities!
Nine ports from Acer including HDMI, VGA, Gigabit Ethernet, three USB 3.0, SD/TF card readers, and 100W PD charging. The Acer 9-in-1 sits in the same space as the Lenovo 7-in-1 and UGREEN Revodok but adds VGA and Ethernet that those hubs lack. For anyone who walks into meeting rooms with VGA projectors and needs wired network alongside the standard HDMI, USB, and charging, the Acer covers all of it from one USB-C cable. Aluminum build. Plug & Play on macOS, Windows 8+, Chrome OS, Linux, and Android. Driver required for Windows 7/XP Ethernet. 1-year Acer warranty.
Key Specifications
| Specification | Detail |
|---|---|
| Total Ports | 9 |
| HDMI | 1 (4K@30Hz) |
| VGA | 1 (1080p@60Hz) |
| USB 3.0 | 3 (5 Gbps) |
| USB-C PD | 1 (100W charging only, no data) |
| Gigabit Ethernet | 1 (10/100/1000 Mbps, CAT6+ recommended) |
| SD Card Reader | 1 (up to 1TB) |
| TF/MicroSD Reader | 1 (up to 1TB) |
| HDMI + VGA Modes | Mirror (A-AA) and Extend (A-BB) |
| DP Alt Mode Required | Yes (for HDMI/VGA video output) |
| Enclosure | Aluminum |
| Compatible OS | macOS, Windows 8+, Chrome OS, Linux, Android |
| Driver Required | Windows 7/XP for Ethernet only |
| Samsung Tablets | Requires Samsung DeX Mode enabled |
| Weight | Not specified |
| Dimensions | Not specified |
| Model | ODK390 / ACER-UC906 |
| Warranty | 1 year (Acer manufacturer) |
HDMI + VGA: Two Display Modes
Connect both HDMI and VGA simultaneously and the Acer provides two display modes. Mirror mode (A-AA) shows the same content on both screens. Extend mode (A-BB) shows different content on each screen. Mirror is useful for presentations where both a monitor and a projector show the same slides. Extend is useful for putting your work on one screen and reference material on another.
The HDMI port outputs at 4K@30Hz. The VGA port outputs at 1080p@60Hz. When both are connected simultaneously in extend mode, you get your laptop screen plus two external displays showing different content. The VGA image will be slightly softer than HDMI because VGA is analog, but for text-based work and presentations viewed from a distance, the difference is not meaningful. For USB-C display requirements, see our USB-C portable monitor guide.
Gigabit Ethernet with CAT6 Requirement
The Ethernet port supports 10/100/1000 Mbps. To reach the full Gigabit speed, a CAT6 or higher Ethernet cable is required. CAT5e works but may not sustain a full Gigabit connection reliably over longer runs. For video calls, cloud sync, and large file downloads, wired Gigabit provides the stability that WiFi cannot guarantee. The Ethernet port requires a driver installation on Windows 7 and XP. All other operating systems work Plug & Play.
Three USB 3.0 Ports at 5 Gbps
Three USB-A 3.0 ports run at 5 Gbps for external drives, flash drives, printers, and peripherals. The hub does not have USB 2.0 ports. All three USB ports run at the same speed. For keyboards and mice that do not need 5 Gbps, the ports still function normally at USB 2.0 speeds for those devices.
SD and TF Card Readers
Both card readers support cards up to 1TB capacity. For photographers with high-capacity SDXC cards or drone operators with large microSD cards, the 1TB support means the hub reads the largest consumer cards available. Both readers work simultaneously, allowing you to transfer from an SD card and a microSD card at the same time.
100W PD Charging: Power Only
The USB-C PD port accepts up to 100W from your charger and passes power through to the laptop. This port is charging only. It does not transfer data. If you plug a USB-C drive into the PD port expecting file transfer, nothing will happen. The PD port powers the laptop. The three USB-A ports handle data. Each port has one job.
Samsung DeX Mode Required
Samsung Galaxy Tablet users must enable Samsung DeX Mode before connecting to the hub. Without DeX enabled, the tablet may not output video or extend the display through the hub. This is a Samsung software requirement, not an Acer hardware limitation. Other Android devices do not require this step.
Drawbacks
| Consideration | Detail |
|---|---|
| HDMI at 4K@30Hz | Not 60Hz. Motion less smooth on active screens. |
| VGA is Analog | Softer image than HDMI. Legacy equipment only. |
| USB-C Port: Charging Only | No data transfer through the PD port. |
| Weight/Dimensions Unknown | Not specified in Amazon data. |
| Driver for Win 7/XP | Ethernet requires driver on older Windows versions. |
| Samsung DeX Required | Galaxy Tablets need DeX Mode enabled. |
| No Audio Jack | No 3.5mm output. |
Who This Hub Is For
Professionals who need HDMI, VGA, Ethernet, USB, card readers, and charging in one portable hub from a major brand: The Acer 9-in-1 provides the combination of VGA legacy support and Gigabit Ethernet that lighter 7-port hubs from Lenovo and UGREEN skip. Aluminum build. Android and Samsung DeX support. 1-year Acer warranty. If your work takes you into meeting rooms with VGA projectors and you need wired network and card readers alongside HDMI, the Acer covers it all. For the Acer dock with dual 4K@60Hz, see the Acer USB-C Docking Station review.
Users who need 4K@60Hz HDMI or audio output: HDMI runs at 30Hz. No 3.5mm audio. For those needs, larger docks serve better. See our docking stations hub page.
Final Verdict
The Acer 9-in-1 fills the gap between minimal 7-port travel hubs and full 14-port desk docks. Nine ports with VGA, Ethernet, HDMI, three USB 3.0, dual card readers, and 100W PD charging cover the needs of a professional who moves between offices, meeting rooms, and travel setups. The VGA port serves the real-world scenario of conference rooms that have not been updated. The Gigabit Ethernet serves the stability that WiFi cannot provide during critical calls and transfers.
The 4K@30Hz HDMI and missing audio jack are the trade-offs. For a professional who needs more than a 7-port hub but does not need the weight and cost of a 14-port dock, the Acer 9-in-1 provides the middle ground with Acer’s name and warranty behind it.
Frequently Asked Questions
Can I use HDMI and VGA at the same time?
Yes. Mirror mode shows the same content on both. Extend mode shows different content. The Acer specifies these as Mirror (A-AA) and Extend (A-BB) modes.
Why does the USB-C port not transfer data?
The USB-C port is dedicated to PD charging only. It accepts power from your charger and passes it to the laptop. Data transfer uses the three USB-A 3.0 ports.
Do I need a driver?
Only for Ethernet on Windows 7 or Windows XP. All other operating systems and all other ports work Plug & Play.
Does it work with Samsung tablets?
Yes, but Samsung DeX Mode must be enabled on the tablet before connecting. Without DeX, the tablet may not output video through the hub.
Disclosure: As an Amazon Associate, I earn from qualifying purchases.
Docking Station Intelligence
The standards are confusing by design. These three panels decode what manufacturers won’t explain clearly. Applicable to every docking station.
The USB-C Confusion Matrix
The USB-C connector is the single greatest source of buyer confusion in docking stations. The physical plug looks identical whether it carries USB 2.0 at 480 Mbps or Thunderbolt 5 at 120 Gbps — a 250x difference in capability hidden behind the same shape. Manufacturers exploit this by labeling everything "USB-C compatible" without specifying which protocol runs through it. Two docks can look identical on the outside and behave completely differently once you plug them in.
The hierarchy matters because it determines everything: how many monitors your dock can drive, how fast files transfer, whether your laptop charges while docked, and whether you need third-party drivers. Here is the real capability ladder, from slowest to fastest:
The practical takeaway: if your laptop has Thunderbolt 4, buy a Thunderbolt dock. If it only has generic USB-C, verify whether it supports DisplayPort Alt Mode before buying anything with multi-monitor claims. Our buying guide walks through verification steps for every major laptop brand.
Power Delivery: What the Watts Mean
Power Delivery (PD) determines whether your docking station can charge your laptop while you work, or whether you need a separate charger cluttering your desk. The math is simple but rarely explained: your laptop draws a specific wattage under load, and the dock must match or exceed it. If the dock delivers less than your laptop needs, the battery slowly drains even while plugged in — defeating the purpose of a docking station entirely.
Most ultrabooks need 45–65W. Standard business laptops need 65–100W. Gaming and workstation laptops can demand 100–140W or more. The dock’s advertised PD wattage is the maximum it can deliver to your laptop — but this drops if you charge other devices (phones, tablets) through the dock simultaneously. Always leave a 15–20W margin above your laptop’s requirement.
Check your laptop’s original charger wattage — that’s your baseline. Our FAQ covers how to find this for every major brand.
Native Display vs DisplayLink: The Hidden Factor
This is the decision most buyers don’t know they’re making. When a docking station outputs video to your monitors, it uses one of two fundamentally different methods: native (the dock passes your laptop’s GPU signal directly to the monitor) or DisplayLink (the dock compresses video over USB and a software driver renders it). The difference is invisible in marketing materials but profoundly affects your daily experience.
Native output through DisplayPort Alt Mode or Thunderbolt uses your laptop’s actual graphics hardware. There is zero added latency, full DRM support for streaming services, no CPU overhead, and no driver to install. DisplayLink, by contrast, adds 5–15ms of latency (noticeable in video calls and cursor movement), blocks DRM content on connected monitors (Netflix, Disney+ show black screens), consumes 3–8% of your CPU constantly, and requires a driver that Apple’s macOS security updates occasionally break.
DisplayLink exists for one reason: Apple Silicon base chips (M1, M2, M3) can only drive one external display natively. If you need two or more monitors on a base MacBook Air or 13” MacBook Pro, DisplayLink is your only option. For everyone else — Windows users, Mac Pro/Max chip users, Intel/AMD laptops — native is always the better choice.
Native (Alt Mode / Thunderbolt)
DisplayLink (USB compression)
The bottom line: if your laptop supports native multi-display output, always choose a native dock. DisplayLink is a workaround, not an upgrade. See our glossary for detailed definitions.
COMMAND CENTERCOMMAND CENTER
Six tools that decode the confusion manufacturers create. Port protocols, power budgets, display configurations, compatibility, desk planning, and future-proofing. Full buying guide →
Port Protocol DecoderWhat does your connection type actually support? Glossary
Power Delivery CalculatorCan this dock keep your laptop charged?
Display Configuration PlannerCan your dock push enough pixels?
Laptop-to-Dock CompatibilityWill this dock work with YOUR laptop?
Desk Setup ArchitectWhat ports do you actually need?
Select everything you need to connect: