# ASUS ROG Bulwark Dock DG300 Review: 8K HDMI Reality and the 100W PD Limit > ROG DG300 USB-C dock: 8K-capable HDMI, 3x USB-A, 1GbE, 140W in / 100W out. Why 100W may not charge a gaming laptop under load. Tags: asus, rog, usb-c-dock, docking-station, hdmi, gigabit-lan, power-delivery Source: https://www.amazon.co.jp/dp/B0FRMDPR42 Article page: https://web-autoai.com/articles/asus-rog-bulwark-dock-dg300-hdmi-usb-usb32-type-c?lang=en Prices and ratings change over time — check the article page for the current values. --- Throughout this article, ASUS ROG Bulwark Dock DG300 ブラック HDMI USBポート USB3.2 (Type-C×2/Type-A×3) ドッキングステーション is referred to simply as the DG300. ## Overview The DG300 does one job: it turns a single USB-C port on your laptop into one HDMI output, two USB 3.2 Gen 2 Type-C ports (one of which is the host connection), three USB 3.2 Gen 2 Type-A ports, and a 10/100/1000BASE-T wired Ethernet jack. It accepts up to 140W of input and passes up to 100W through to the host, so video, data and power all travel over one cable. The chassis measures 160×74×25.5 mm and weighs 335 g — small enough to carry, heavy enough to stay put on a desk. The short version: this dock fits people who park a gaming laptop on a desk and want one display, wired Ethernet and a few USB devices consolidated. It does not fit people who need two or more displays, Thunderbolt-class bandwidth, or an SD card reader. That boundary is the most useful thing this article can tell you. | Spec | Value | |---|---| | Max resolution | 7680×4320 | | HDMI | 1 | | USB 3.2 Gen 2 Type-C | 2 (one is the host port) | | USB 3.2 Gen 2 Type-A | 3 | | LAN | 10/100/1000BASE-T (RJ-45) | | Max input / output | 140W / 100W | | Bundled cable | 250 mm | | Dimensions / weight | 160×74×25.5 mm / 335 g | | Warranty | 12 months | Two numbers matter more than the rest: 140W in versus 100W out, and that 250 mm cable. The first governs how much charging headroom you actually get; the second governs where you can physically put the dock. ## Compatibility Guide Supported operating systems are Windows 11 (24H2 or later), macOS 12.3 or later, and Android 14 or later. But OS support and full functionality are different things. For the DG300 to work as intended, the host USB-C port must simultaneously handle data, video (DisplayPort Alt Mode) and USB Power Delivery. This is where most people get caught out. Laptop USB-C ports come in three flavours: charge-only, data-only, and full-featured with video. Even on machines with several Type-C ports, often only one carries video. Look for a display or DP marking beside the port (a lightning bolt usually means Thunderbolt), and check your laptop's spec sheet for "DisplayPort Alt Mode" before buying. Skip that check and you get the most confusing failure mode there is: the dock powers up, but no picture appears. Ethernet runs at up to 1 Gbps. That looks slower than peak Wi-Fi 6 figures, but latency stability is where wired still wins. If you care about ping consistency in competitive games, the Ethernet port alone can justify the purchase. Physical limits matter too. The bundled USB-C-to-C cable is about 250 mm. That assumes the dock sits right next to the laptop; it is nowhere near long enough to hide the dock behind a monitor or under the desk. If you replace it, the cable must support video, 100W charging and 10Gbps data. A charge-only cable will deliver power and nothing else. ## Reading the 100W Power Figure The DG300 draws up to 140W and passes up to 100W to the host. The roughly 40W difference covers the dock itself and the devices hanging off it, which is a sensible split — you can attach several USB peripherals without starving the laptop. The catch is that gaming laptops routinely need more than 100W. Machines that load CPU and GPU together often ship with 200W-plus adapters, so USB-C delivery alone cannot cover full-load draw. Realistic expectation: the battery charges during browsing and office work, and holds flat or drains slowly during gaming. Plan to keep the stock adapter for game sessions. Some laptops also cap USB-C charging internally, or switch back to the barrel adapter under load. This varies enormously by model, so check your own manual for whether USB-C charging is supported and at what wattage. ## 8K Is a Ceiling, Not a Guarantee The 7680×4320 figure is the maximum the interface can address. What actually appears on screen depends on refresh rate, colour depth, display stream compression support, and the monitor's own input spec. DisplayPort Alt Mode carries less bandwidth than Thunderbolt 4 or USB4, and 8K-class signals generally rely on compression to fit. So do not read "8K support" as "8K at high refresh, always. " The realistic target is one 4K display running at a usable refresh rate, and for that there is headroom. If you already own an 8K monitor and intend to drive it daily, the limiting factor is the host and display pairing, not the dock's marketing number. Cable choice matters as well. For 8K, or 4K at high refresh, the HDMI cable needs to be rated to HDMI 2.1 (48Gbps) class. Reusing an older cable typically shows up as a refresh rate you cannot raise, or a picture that blanks intermittently during signal renegotiation. Keep one certified cable on hand purely as a troubleshooting reference. ## Product Info Check the retailer's page for the latest price. Prices move often and sale pricing can go lower, so check the product page for the current figure before ordering. The eBay entry is a search link only; no specific listing price was available at the time of writing. The score is strong, but 17 is a very small sample that likely reflects early units. The warranty runs 12 months from purchase. Docks tend to fail at connectors and cable strain points, so keep your proof of purchase. At 160×74×25.5 mm and 335 g, it is a mid-range dock in both size and positioning: solid build and enough ports, at a price below Thunderbolt-based alternatives. ## Versus Thunderbolt and USB4 Docks Docks that plug in via USB-C fall into two camps, and the DG300 sits firmly in the DisplayPort Alt Mode camp. | Aspect | DG300 (USB 3.2 Gen 2 + DP Alt Mode) | Thunderbolt 4 / USB4 dock | |---|---|---| | Data bandwidth | ~10Gbps shared across ports | ~40Gbps, easier alongside video | | Displays | One, via the single HDMI | Often two video outputs | | External GPU | Not supported | Supported on some models | | Host requirement | DP Alt Mode is enough | Needs Thunderbolt or USB4 | The case for the DG300 is simple: if one display is enough, Thunderbolt bandwidth is money spent on capability you will not use. The case against it is equally simple: if you already own a Thunderbolt machine and expect to add a second monitor, buying into that side now is cheaper than buying twice. Against generic USB-C hubs at similar prices, the differences are the built-in Gigabit Ethernet and the chassis itself. Ultra-thin hubs tend to trap heat under sustained load and are light enough to be dragged around by their own cables; 335 g in a 160×74×25.5 mm body is the better shape for a permanent desk fixture. Thermal measurements are not published by the manufacturer and are not part of this article's data, so treat that as a design observation rather than a tested claim. ## Setup Pitfalls Connect things in order and troubleshooting gets much easier: power adapter into the dock first, then HDMI to the display, then the bundled cable to the laptop last. Plugging everything in at once leaves you unable to tell whether the dock, the cable or the port is at fault. If there is no picture, work through it in this order: try a different Type-C port on the laptop, swap the HDMI cable, switch the monitor's input manually, then run display detection in the OS. If Ethernet does not appear, check whether a new network adapter shows up in the OS device list. Core functions generally run on in-box drivers, but the network interface may need a driver update depending on the machine and OS build. ## Best Use Cases * **Gaming laptop users with a fixed desk setup**: one display, wired Ethernet, mouse and controller, all reconnected by plugging in a single cable. The ROG styling matches the rest of the lineup. * **Photo and video editors**: one large high-resolution display over HDMI, plus three Type-A ports for external SSDs and card readers. Remember the 10Gbps budget is shared, so avoid running several heavy transfers at once. * **Frequent travellers**: 335 g is easy to pack, and a hotel TV becomes a second screen over HDMI. Wired Ethernet, where available, beats shared hotel Wi-Fi. * **Anyone decluttering a desk**: if reducing cable count is the goal in itself, that alone can justify the price. ## Things to Consider **One display, full stop. ** A single HDMI port means no multi-monitor setup. If two screens are on your roadmap, buy something else now. **Do not expect charging during gaming. ** 100W pass-through generally cannot cover a high-performance gaming laptop at full load. Treat the dock as a charger for light work and keep the stock adapter for game sessions. **No SD card slot, no Thunderbolt. ** Photographers offloading cards daily will need a separate reader, and external GPU users are out of scope entirely. **Your laptop's port spec is the real prerequisite. ** Plug into a Type-C port without DisplayPort Alt Mode and no video appears. That is a host limitation, not a defect, which makes it a poor basis for a return. Verify first. **The bundled cable is 25 cm. ** Hiding the dock behind a monitor means budgeting for a proper replacement cable — and a cheap charge-only cable will manufacture a hard-to-diagnose fault for you. **Treat listing metadata with suspicion. ** Retail listings and category tags do not always match the physical product. This item sometimes appears under HDMI cable categories, but it is a docking station with an HDMI output, not a cable. Confirm the product image, title and ASIN before ordering, and remember the price shown here was captured at a point in time. ## FAQ **Q: Will it work with a MacBook Pro? ** A: macOS 12.3 and later are supported, and MacBook USB-C ports handle video and power, so it connects. Note that some Apple silicon machines limit how many external displays they can drive; with a single HDMI port here, you are on one display regardless. **Q: Can I attach two external monitors? ** A: No. There is one HDMI output. For dual displays, look at Thunderbolt docks with multiple video outputs. **Q: Can I use a controller and an external SSD at the same time? ** A: Yes — three Type-A ports plus a data Type-C. Bandwidth is shared, so a large SSD copy running alongside high-bitrate capture will slow down. Controllers, keyboards and mice are a non-issue. **Q: Do I need to install drivers? ** A: Video, USB and power delivery normally work on in-box drivers under the supported operating systems. Ethernet may require a driver update on some machines or OS builds; if it is not detected, check the OS network settings for a new adapter first. **Q: Does it work with Android phones and tablets? ** A: Android 14 and later are supported, but whether video output works depends on the device supporting DisplayPort Alt Mode, and Android hardware varies widely here. Check the device maker's spec sheet. ### Product Disclosure (Amazon) - Manufacturer: ASUS - Seller: Amazon.co.jp - Fulfilled by: Amazon.co.jp - ASIN: B0FRMDPR42 - Note: This article covers a manufacturer-made product based on Amazon listing details.