Valve has released SteamOS 3.9.3 to the Beta and Preview channels with its headline change described as “Improved support for Steam Frame wireless adapter.” The build is intended for testing, not the ordinary stable channel. It also advances the wider Steam Machine-to-Steam Frame streaming path, including a fix for frame limiting being applied incorrectly to virtual-reality titles.
What SteamOS 3.9.3 Beta changes
The release notes identify the wireless-adapter improvement as a general SteamOS change. Valve has not published a latency, throughput or reliability measurement for the adapter in these notes, so the update should be understood as compatibility and software-support work rather than a quantified performance upgrade.
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The change is linked to Steam Machine streaming. SteamOS 3.9 fixes a problem in which the frame limiter could be applied incorrectly to VR titles when streaming from a Steam Machine to Steam Frame. That matters because frame pacing in a streamed VR session can affect motion quality and responsiveness; the release note confirms the bug fix but does not provide a benchmark.
Other fixes and platform work in the 3.9 branch
SteamOS 3.9.3 is a point release on a larger 3.9 development line. The branch updates the Arch Linux base and moves Desktop Mode from Plasma 6.4.3 to Plasma 6.7.3. Valve also lists fixes or improvements for the following areas:
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
- Hidden Wi-Fi networks that failed to connect on the first attempt.
- Steam Remote Play on Steam Machine when no external display is attached.
- Variable-refresh-rate and frame-limiter behavior.
- Suspend and resume on systems using RDNA1 or RDNA2 graphics.
- Legion Go 2 support.
- ASUS firmware fan behavior.
- Game launches on Intel Panther Lake hardware.
- A GPU-error issue in The Crew Motorfest.
- Resume performance for STAR WARS: Galactic Racer on Steam Machine.
- Monitor-hotplug audio behavior, plus security and stability fixes.
- Reintroduced Android binder IPC support.
Developer-facing changes include a Linux kernel rebase to version 7.2, preliminary hibernation support, a wpa_supplicant default for new installations and improved accelerated-graphics support for virtual machines. These are branch-level changes; installing 3.9.3 does not mean every feature is mature or enabled on every device.
Does SteamOS 3.9.3 support the Steam Frame wireless adapter?
Yes, the Beta release explicitly improves support for the adapter. However, “support” has an important qualification. Valve’s Steam Frame Feature and Troubleshooting Guide says: “Full support for SteamVR and Steam Frame streaming via the wireless adapter are currently available on Windows only.” That statement means a Linux or SteamOS installation should not be treated as having the same fully supported streaming experience as Windows today.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
The same guide says that, once Steam Frame ships, Linux-PC users of the wireless dongle will need SteamOS 3.9 or later, or a Linux kernel version 7.2 or later. SteamOS 3.9.3 meets that stated SteamOS requirement, but the documentation still limits full adapter streaming support to Windows at the time covered by the guide.
Windows and Linux requirements compared
| Setup | Required software stated by Valve | Documented support status | Relevant use case |
|---|---|---|---|
| Windows PC | Windows; the guide does not specify a minimum Windows version in the cited statement | Full SteamVR and Steam Frame streaming via the wireless adapter currently documented | Steam Frame streaming and SteamVR workflows |
| Linux PC | Linux kernel 7.2 or later once Steam Frame ships | Kernel requirement is stated, while full adapter streaming support is currently documented for Windows only | Linux-PC adapter use subject to Valve’s evolving support |
| SteamOS device or Steam Machine | SteamOS 3.9 or later for the Linux requirement | 3.9.3 Beta improves adapter support and fixes a Steam Machine-to-Steam Frame VR frame-limiter issue | Streaming from Steam Machine to Steam Frame |
How to install the Beta or Preview build
SteamOS labels these channels as containing features still being tested. To opt in, use the system update-channel control:
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
- Open Settings.
- Select System.
- Open System Update Channel.
- Choose the Beta or Preview channel, then check for updates and install SteamOS 3.9.3 if it is offered for your device.
Because this is not a stable-channel announcement, users who depend on a handheld, Steam Machine or living-room PC for uninterrupted daily use should treat the channel switch as a testing decision. Back up important files and note your current update channel before changing it so you can return to the prior channel if a regression affects your hardware or games. The release notes do not promise that every listed fix applies uniformly across all SteamOS hardware.
Do you need SteamOS 3.9 for Steam Frame?
If you plan to use the wireless adapter from a Linux-based PC, Valve’s documented requirement is SteamOS 3.9 or newer, or Linux kernel 7.2 or newer. SteamOS 3.9.3 Beta therefore provides the required version line, but it is a pre-release build and the guide’s full-support statement still points to Windows. Users who need the most complete documented adapter path now should use a supported Windows setup; Linux users should verify current Valve guidance for their exact hardware and workflow before switching channels.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
What this release does not establish
- It does not establish a retail price, stock status or verified retailer listing for the Steam Frame wireless adapter.
- It does not publish measured wireless latency, bandwidth or connection reliability.
- It does not announce that SteamOS 3.9.3 has moved to the stable channel.
- It does not remove the distinction between the Linux kernel requirement and Valve’s current Windows-only full-support wording.
The Bottom Line
SteamOS 3.9.3 Beta is a meaningful compatibility step for the Steam Frame wireless adapter and fixes Steam Machine-to-Steam Frame VR frame-limiter behavior, but it remains a Beta/Preview build. Linux users meet Valve’s stated SteamOS 3.9 or kernel 7.2 requirement, while full adapter streaming support is currently documented for Windows.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
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