JSAUX M.2 Steam Deck Dock with 100W Charger Review: Storage at the Desk

This review analyzes published product information. We have not performed hands-on testing of this unit.

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A dock for a larger library, not just a larger screen

The JSAUX 6-in-1 M.2 Steam Deck Docking Station with 100W AC Adapter has a specific attraction: it combines display, network and peripheral connections with a slot for an additional SSD. For someone who regularly returns a Steam Deck to the same desk, that storage option is a more meaningful distinction than another cosmetic variation of a standard dock.

This review assesses the supplied retailer specifications, not hands-on testing. The exact configuration includes the M.2-equipped dock and a 100W AC adapter; it does not include an SSD. It is materially different from the previously covered JSAUX HB0609 modular dock: this listing specifies an M.2 storage slot and HDMI output up to 4K at 60Hz, whereas the HB0609 evidence describes a modular base and 4K at 120Hz output. They should not be treated as interchangeable configurations.

The supplied configuration at a glance

M.2 expansion changes the buying decision

The storage slot is the main reason to consider this version. JSAUX advertises support for an M.2 SSD with capacity up to 2TB, using a USB 3.2 Gen 2 connection. That could suit a desk-based library or other files you do not need to carry on the handheld itself. The important practical distinction is that the added storage belongs to the docked setup: do not plan around accessing that drive after disconnecting the handheld.

There are significant purchasing details missing. The supplied evidence does not identify supported SSD lengths, keying, or whether the slot accepts SATA, NVMe, or both. M.2 alone is not enough information to select a drive confidently. Confirm those requirements before buying an SSD, rather than assuming an existing spare will fit and function.

The stated 10Gbps interface and 900MB/s transfer figure are seller claims, not measured results from this review. They do not establish game-loading behavior, sustained transfers, or performance while other connections are active. Likewise, the listing does not explain storage cooling or provide setup instructions. The expansion feature is useful on paper, but its documentation leaves more homework than a simple port-only dock.

100W charging needs a device-level interpretation

The bundled AC adapter makes this a different purchase from a dock sold without a power supply. JSAUX lists maximum 100W power delivery and describes full-speed Steam Deck charging at 45W. Those numbers serve different purposes: the higher figure is the advertised PD capability, not a promise that the Steam Deck receives or uses 100W.

The evidence does not provide a full PD voltage-and-current profile or distinguish maximum input from guaranteed power available to the handheld under every connected load. Consequently, this bundle should not be selected as a verified 100W charging solution for an unrelated laptop. For Steam Deck use, the relevant claim is the stated 45W charging support, still subject to the limits of an untested specification-based assessment.

EU and US plug adapters are included. That is helpful for planning a travel kit, but the supplied information does not state the AC input-voltage range. Check the adapter label before treating the included plugs as confirmation of electrical compatibility at a destination.

Display and wired accessories: useful, with clear ceilings

The HDMI 2.0 output is advertised for 4K at 60Hz or 2K at 120Hz. These are output modes, not assurances about how quickly a game will render. The listing also leaves “2K” undefined, so confirm the exact resolution and refresh combination required by your monitor rather than relying on that shorthand.

Gigabit Ethernet offers a wired networking connection, while two USB-A 3.2 ports provide places for peripherals. This is a sensible connection mix for a handheld that doubles as a desk machine. However, there is no supplied specification for those USB-A ports’ individual transfer rates or available accessory power. Buyers with several wired accessories should count their connections before committing; the evidence lists only two USB-A ports.

Compatibility and the travel-bag calculation

Steam Deck is the clearest intended host. The listing title also names ROG Ally, but the feature text explicitly excludes ROG Ally X, AYANEO and Switch devices. Do not extend the ROG Ally reference to other similarly named handhelds. Protective-case clearance and detailed fit measurements are not supplied either.

The listed weight is approximately 2.14 pounds, but the evidence does not clarify whether that represents the dock alone or the bundled contents. It is therefore not a reliable dock-only packing weight. For travel, the real decision is whether carrying storage and a separate charger together is worthwhile, rather than assuming this is a minimal adapter. Readers weighing a broader desktop setup can also consult our laptop docking station guide.

Verdict

This JSAUX bundle is most compelling for a Steam Deck owner who wants dock-resident SSD expansion alongside HDMI, Ethernet and a supplied charger. Choose it for that combination, not for assumed universal compatibility or guaranteed storage speeds. Confirm SSD requirements first, respect the explicit device exclusions, and look elsewhere if documented high-power laptop charging is the priority.

Sources: Supplied JSAUX retailer listing and specifications.

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