GL.iNet Comet Pro Review – The Best Remote Hardware KVM Yet?

GL.iNet Comet Pro Review

The GL.iNet Comet Pro is the company’s latest remote KVM (Keyboard, Video, Mouse) solution, launched on Kickstarter with shipping scheduled for December 2025. Unlike standard remote desktop tools that require a functioning operating system, a KVM device operates at a much lower level, providing access from cold boot and BIOS onward. This allows users to troubleshoot, install operating systems, and manage systems without direct physical interaction. Positioned as both an upgrade to GL.iNet’s original Comet KVM and as a potential rival to the JetKVM, which attracted considerable attention in 2024, the Comet Pro integrates more modern hardware and a larger feature set. The device includes a quad-core ARM Cortex-A53 processor, 1GB of DDR3 memory, 32GB of onboard eMMC storage, and a 2.22-inch touchscreen for configuration. Alongside HDMI passthrough supporting up to 4K at 30 FPS, it also incorporates Wi-Fi 6 connectivity, Gigabit Ethernet, and a range of accessory integrations such as an ATX power board and Fingerbot for remote power cycling. Early backers can pledge from $99, with campaign tiers running up to $155 depending on bundles, and at the time of writing, the campaign has surpassed £200,000 in pledges with more than 1,900 supporters.

GL.iNet Comet Pro Review – Quick Conclusion

The Comet Pro is a compact KVM device that builds on the foundations of earlier solutions with stronger hardware, built-in storage, dual HDMI with passthrough, and both wired and Wi-Fi 6 connectivity, making it practical for local and remote management tasks. Its touchscreen interface, bundled cables, and accessory support via the ATX board and Fingerbot give it utility beyond basic KVM duties, while low power draw and stable thermals make it suitable for 24/7 use. However, its design also brings limitations, most notably the fixed 32GB eMMC storage with no expansion, the absence of PoE for simplified cabling, and just 1GB of RAM, which may restrict headroom for heavier workloads. Compared with the JetKVM, the Comet Pro is more expensive but offers significantly higher specifications, a more polished and consumer-ready experience, and wireless deployment options, whereas JetKVM appeals to those who prioritise affordability, open-source flexibility, and community-driven extensions. Ultimately, the Comet Pro is best suited for users seeking a stable, ready-to-use appliance, while JetKVM remains the choice for enthusiasts who prefer a leaner, hackable platform.

Important! This is not ‘traditional retail’, this is Crowdfunding!

It is important to note that the Comet Pro is currently a crowdfunding product and not a retail release. Backing through Kickstarter carries inherent risks, as funding a campaign does not guarantee delivery, nor does it ensure the final product will exactly match the early prototypes or promises made during the campaign. GL.iNet has a history of successfully shipping crowdfunded devices, but manufacturing delays, component shortages, or design changes can still occur. Potential backers should approach pledging with awareness of these risks and only commit funds they are comfortable waiting on until the estimated December 2025 shipping window, bearing in mind that schedules may shift.

GL.iNet Comet Pro Review – Design

The Comet Pro adopts a compact desktop form factor measuring 93 × 84 × 47 mm and weighing just 170 g, making it small enough to sit discreetly on a desk or beside a server rack without occupying unnecessary space. Despite this minimal footprint, it integrates a 2.22-inch colour touchscreen on the front panel, which plays an important role in the day-to-day use of the device. This screen is not only employed during initial setup for Wi-Fi and PIN entry but also allows the user to directly toggle remote services on or off, adjust brightness, and check status information such as uptime or network configuration.

Unlike entry-level KVMs that demand all management through a browser, the inclusion of a touchscreen brings a more immediate, appliance-like feel to the unit. Heat management has also been considered, with the case designed with discreet venting along the underside to maintain airflow during continuous operation. In extended sessions, surface temperatures were recorded at up to 49°C at the base, but without throttling or stability issues, showing the design can sustain 24/7 deployment.

Visually, the device takes a utilitarian approach, using a clean matte finish and prioritising ease of connection rather than elaborate styling. One of the more practical design decisions is the use of full-sized HDMI input and output ports. Many compact alternatives rely on mini HDMI or adapter cables, which can create points of failure or add cost, whereas the Comet Pro provides standard connections that integrate directly with PCs, NAS units, or workstations.

The rear panel arranges all I/O in a straightforward, linear layout, including Ethernet, USB power, USB-A for accessories, and the dual HDMI ports, reducing clutter and keeping cable routing manageable. This makes the device particularly well suited for semi-permanent setups where it may sit behind a desk or alongside other networking gear. GL.iNet has also bundled a complete set of cables in the package, including HDMI, USB-C to USB-C, USB-C to USB-A, and Ethernet, ensuring the unit can be deployed without requiring third-party accessories.

Build quality and practicality are at the centre of the Comet Pro’s design choices. At under 200 g, it is easy to reposition, mount, or carry between locations, yet solid enough that it will not slide around when multiple cables are connected. The lack of Power over Ethernet (PoE) is one area that has already drawn attention, as many users favour a simplified single-cable setup that combines power and network.

Instead, the Pro model must rely on USB-C power delivery or its bundled 10 W PSU, which while flexible, requires additional cabling. GL.iNet has confirmed that PoE support is reserved for its separate Comet PoE model, meaning the Pro prioritises wireless and accessory integration instead. Even so, its physical layout and cable-friendly design suggest it is intended for regular use in homelabs, testing environments, or small professional deployments where convenience and low-profile form factor matter more than absolute minimal wiring.

GL.iNet Comet Pro Review – Internal Hardware & Storage

Inside the Comet Pro, GL.iNet has opted for a quad-core ARM Cortex-A53 processor paired with 1GB of DDR3 memory. This is a significant step up from entry-level KVM devices that rely on single-core or lower-clocked CPUs with a fraction of the RAM. In practice, this extra horsepower allows the Comet Pro to handle simultaneous HDMI input and passthrough, touchscreen responsiveness, and background tasks like network services without becoming sluggish. During testing, the system was able to manage multiple connections while remaining responsive, though the limited RAM may still cap future feature expansions. The use of DDR3 memory rather than newer DDR4 or LPDDR standards reflects a balance between cost and compatibility, keeping the device affordable while still delivering adequate performance for its class.

For storage, the Comet Pro is equipped with 32GB of onboard eMMC. This capacity is well above the minimal storage seen in many competing KVM devices, and it serves two primary functions. First, it can be used to host multiple ISO images, allowing the user to boot or reinstall different operating systems remotely without attaching physical media. Second, it can act as a mounted USB drive that provides read and write access to files directly from the host system. While these features add flexibility, the storage has limits. The lack of an SD card slot or USB-based expansion option means the 32GB is fixed, and transfer speeds during testing averaged between 23–25 MB/s. This is sufficient for smaller ISO files or driver discs but noticeably slower when handling larger media.

The choice of eMMC storage also reflects GL.iNet’s attempt to balance convenience with simplicity. eMMC is compact, inexpensive, and integrated directly onto the board, reducing complexity compared to SATA or NVMe alternatives. However, this comes at the cost of speed and upgradability. For most use cases—boot images, firmware updates, and light file transfers—the built-in storage will suffice. Yet users hoping to load multiple large OS images or transfer substantial file sets may find the limits more apparent. Overall, the hardware inside the Comet Pro prioritises straightforward functionality and self-contained operation, providing just enough headroom to support modern usage without straying into higher-cost hardware that would push the device beyond its current Kickstarter pricing tiers.

GL.iNet Comet Pro Review – Ports and Connections

The Comet Pro provides a straightforward but practical set of external connections designed to balance usability with broad compatibility. On the rear panel, users will find a Gigabit Ethernet port, USB-C power input, a USB-A accessory port, and two full-sized HDMI ports for input and output. Unlike some compact KVMs that opt for mini HDMI or USB-based video, GL.iNet has chosen to include full HDMI, reducing the reliance on adapters and making the unit easier to integrate directly into PCs, NAS systems, or servers. This makes it more suitable for users who want a clean installation without juggling conversion cables. The layout also keeps ports well separated, which helps prevent cable congestion when all are in use.

One of the standout design choices is the dual HDMI configuration, offering both an input for capturing video from the host system and a passthrough for maintaining a local display connection. This allows the device to operate in the background without interrupting a user’s normal monitor setup, an advantage for environments where physical access is still required while also keeping remote access enabled. The USB-A port expands functionality further by supporting accessories such as the optional ATX power board and Fingerbot, which extend control over physical system states. These add-ons use standard USB 2.0 signalling, keeping integration simple, while enabling functions like remote power cycling or triggering a hardware reset at the press of a button.

Networking is handled through a single RJ45 Gigabit Ethernet port alongside built-in Wi-Fi 6 support, giving the user flexibility between wired and wireless setups. While the Ethernet interface provides the most stable connection, the inclusion of dual-band Wi-Fi means the Comet Pro does not require a physical LAN cable in every scenario, broadening its deployment options for homelab users or portable testing environments. However, the device lacks Power over Ethernet (PoE) capability, meaning power and network must be provided separately. GL.iNet has directed PoE-focused users to their Comet PoE variant, leaving the Pro model better suited for those prioritising wireless convenience and accessory integration.

• 1 × RJ45 Gigabit Ethernet (10/100/1000)

• 1 × USB Type-C (Power Input, 5V 2A with PD support)

• 1 × USB 2.0 Type-A (Accessory connection, e.g., ATX board, Fingerbot)

• 1 × HDMI Input (Full size)

• 1 × HDMI Output (Full size, passthrough up to 4K@30fps)

GL.iNet Comet Pro Review – Performance and Tests

In practical testing, the Comet Pro demonstrated stable operation across both local and remote connections. When deployed on a local area network over Gigabit Ethernet, video output remained smooth, with latency kept to levels that were difficult to notice in everyday use. The passthrough HDMI supported up to 4K at 30 FPS or 1080p at 60 FPS, making it suitable for both configuration tasks and lighter remote interaction. While not designed for high-performance gaming, the device handled operating system installations, BIOS configuration, and desktop navigation without visible delay. Remote testing via GL.iNet’s relay service also showed responsive behaviour, though these tests were conducted early in the campaign with relatively few users active, making it unclear how well the service will scale under heavier demand.

The device’s quad-core ARM Cortex-A53 processor and 1GB of RAM proved sufficient to manage transcoding and stream adjustments when accessing via browser or desktop applications. The integrated H.264 encoding allows the unit to downscale or compress the video feed to accommodate lower-bandwidth scenarios, ensuring remote sessions remained usable even when connection quality fluctuates.

Audio support, both through HDMI and USB, added another layer of functionality for remote collaboration or troubleshooting, though microphone activation required restarts to take effect. During prolonged use, the touchscreen interface remained responsive, and system access features such as security PINs and two-factor authentication functioned as expected, providing a secure operating baseline.

Storage performance, while not fast, was consistent. Writing data to the 32GB eMMC averaged between 23–25 MB/s, which was sufficient for uploading ISO images and driver discs but noticeably slower for large files. Virtual media mounting worked reliably, allowing ISO files to be presented to the host system as if they were locally connected USB drives.

File sharing via the remote mount function extended this further, making the KVM’s internal storage act as a conventional drive from within the connected operating system. This feature proved useful for transferring smaller files such as utilities or configuration scripts but was limited by the inherent speed of the eMMC storage.

Power consumption during testing remained low, with idle draw measured between 1.5 and 2.5 W and heavier operation drawing up to 4.5 W. Temperatures were also within safe limits, peaking at around 49°C under continuous use with all ports occupied. Importantly, the system did not throttle or show instability during extended testing periods.

While the absence of PoE limited deployment flexibility, the ability to power the device either via the included 10 W PSU or from a client USB port added some versatility. Taken as a whole, the performance tests suggest that the Comet Pro is capable of delivering reliable day-to-day remote access for administrative tasks, though it is not intended for high-throughput or latency-sensitive workloads.

• Video Output: 4K@30 FPS, 1080p@60 FPS

• Encoding: H.264 hardware encoding confirmed

• Average Latency: ~30–60 ms (local and remote, tested)

• Storage Write Speed: 23–25 MB/s (32GB eMMC)

• Idle Power Draw: 1.5–2.5 W

• Active Power Draw: Up to 4.5 W

• Operating Temperatures (Tested): 40–49°C surface depending on panel location

Comet Pro vs JetKVM – Which Should You Buy?

When comparing the Comet Pro to the JetKVM, the most immediate difference is in hardware resources. The Comet Pro offers a quad-core ARM Cortex-A53 processor, 1GB of DDR3 memory, and 32GB of eMMC storage, while the JetKVM relies on a single-core Cortex-A7 CPU with 256MB of RAM and either 4GB or 16GB of eMMC depending on version. This gives the Comet Pro considerably more capacity to handle multiple connections, virtual media, and remote management tasks. The inclusion of a larger 2.22-inch touchscreen further expands its usability, particularly for setup and local controls, whereas JetKVM uses a smaller 1.69-inch panel with more limited functions. From a purely technical perspective, the Comet Pro is the more capable unit, but this comes with a higher entry price.

Networking and connectivity also reveal differing priorities. The Comet Pro includes both Gigabit Ethernet and Wi-Fi 6 dual-band support, allowing deployment without wired LAN, while the JetKVM only provides a 100 Mbps Ethernet port and no wireless option. JetKVM compensates for this with a lightweight, open-source software stack built around WebRTC, which emphasises speed and hackability for developers. It also features an RJ11 extension port for add-ons such as ATX control boards and DC power modules, encouraging community-built extensions. The Comet Pro instead integrates accessory support through USB, offering officially developed add-ons like the ATX board and Fingerbot, but with less emphasis on third-party modification. In short, JetKVM is more open and extensible, while Comet Pro is more self-contained and focused on out-of-the-box deployment.

Price and ecosystem support are another dividing factor. JetKVM launched on Kickstarter at $69 and built momentum on being affordable, transparent, and entirely open source. The Comet Pro starts at $99 for early backers and scales up to $155 for bundles, reflecting its higher hardware cost and added features. JetKVM’s community-driven development and open licensing have made it popular with enthusiasts who value hackability and long-term flexibility, whereas GL.iNet’s approach with the Comet Pro aligns more with a polished, consumer-ready appliance that still integrates optional remote cloud services. Choosing between them comes down to priorities: those seeking raw affordability and open-source collaboration may lean toward JetKVM, while those preferring a more powerful, integrated, and wireless-capable KVM will find the Comet Pro the stronger candidate.

GL.iNet Comet Pro Review – Conclusion & Verdict

The Comet Pro stands out as a more advanced and accessible interpretation of the compact KVM concept, incorporating stronger internal hardware, built-in storage for ISO management, and dual HDMI with passthrough that makes it practical for both remote and local use. The addition of Wi-Fi 6 support expands deployment flexibility, removing the need to always run physical network cables, while the integrated touchscreen interface allows for quick setup and control without relying solely on external software. During extended tests, it maintained stable operation with modest temperatures and low power consumption, making it suitable for continuous use in homelabs or small offices. The inclusion of accessory support, such as the ATX board for full remote boot control and the Fingerbot for physical power cycling, highlights GL.iNet’s attempt to broaden its appeal beyond simple KVM duties into more complete system management. At the same time, limitations such as fixed 32GB eMMC storage with no expansion options, reliance on external power rather than PoE, and the use of only 1GB of RAM show that the product remains firmly aimed at the consumer and prosumer segment rather than enterprise-grade installations.

When placed against the JetKVM, the decision largely depends on what the user values most in a remote management device. JetKVM has built its reputation on affordability, transparency, and openness, offering a $69 price point, an entirely open-source software stack, and an extension port that allows for custom add-ons developed by the community. For enthusiasts, developers, and those who prefer long-term flexibility, it remains an appealing choice.

In contrast, the Comet Pro arrives at a higher entry cost of $99–$155 depending on bundle but compensates with significantly stronger specifications, built-in wireless connectivity, and a more polished, consumer-ready experience that does not require modification or third-party involvement to be fully functional. Kickstarter progress, with more than £200,000 pledged and nearly 2,000 backers already, suggests demand for such a ready-made solution exists. For users who want a stable appliance with a straightforward setup process and modern hardware, the Comet Pro provides the stronger option. For those prioritising hackability and community-driven development above convenience, JetKVM remains the leaner and more customisable alternative.

Comet Pro KVM PROs

Comet Pro KVM PROs

Quad-core ARM Cortex-A53 CPU and 1GB RAM provide stronger performance than typical compact KVMs 32GB of built-in eMMC storage for ISO mounting and virtual media use Full-sized HDMI input and passthrough output, up to 4K@30 FPS or 1080p@60 FPS Dual connectivity with Gigabit Ethernet and Wi-Fi 6 support 2.22-inch touchscreen for setup, security PIN entry, and local management Low power consumption, averaging 1.5–4.5 W depending on workload Expandability via USB accessories such as the ATX board and Fingerbot Complete set of required cables included in the box for immediate use

Fixed 32GB eMMC storage with no SD card or external storage expansion No Power over Ethernet (PoE) support, requiring separate power cabling Only 1GB of RAM, which may limit future software updates or heavier tasks

 

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