Elgato 4K – Elgato’s 4K S external capture card leans into a simple, bus-powered setup for macOS—showing a Nintendo Switch feed fast in OBS Studio and Streamlabs. It supports 4K60-style workflows with lag-free passthrough and variable refresh rate, but it comes with stric
A capture card shouldn’t feel like a weekend project. With the Elgato 4K S, it mostly doesn’t.
In a Mac-specific test. the setup is almost instant: one HDMI cable into the Nintendo Switch dock. a second HDMI cable out to an ASUS monitor. then a USB-C connection from the capture card to an M1 Max Mac Studio. After everything powered on, the Nintendo Switch feed appeared on the ASUS monitor without drama.
That “just works” moment matters more than the spec sheet, because it’s exactly what a lot of streamers don’t have time to chase—especially when the goal is getting from gameplay to “Go Live” fast.
Elgato positions the 4K S as an easy external HDMI capture card built for capture and streaming workflows. The feature set in the review includes 4K60 support. lag-free passthrough. high resolutions. variable refresh rate support. and portability/functionality for mobile workspaces. The reviewer also ran a quick Windows test after focusing primarily on macOS performance.
Mac Requirements listed are macOS 13 or later. iPadOS 18 with USB-C. and Apple M1 or better for both CPU and GPU. using a USB 3.0 Type-C port. Windows requirements listed include Windows 11 or later. an Intel Core i5 (8th gen or later) or AMD Ryzen. an NVIDIA GeForce RTX 10xx or equivalent GPU. and a USB 3.0 Type-C port.
For the macOS test environment, the daily workspace setup included an M1 Max Mac Studio paired with a Xencelabs 24 Pen Display as the primary screen and an ASUS VY279 as the secondary. OBS Studio handled streaming, and the first Nintendo Switch was the console connected to the capture card.
On the hardware side, the Elgato 4K S uses 2 x HDMI 2.0 plus 1 x USB-C. Passthrough resolutions are listed as up to 2160p60, 1440p120, and 1080p240. Capture resolutions are listed as 2160p60, 1440p60, 1080p120, 1080p60, 720p60, 567p, and 480p. HDR10 passthrough is listed as up to 2160p60. HDR10 capture is listed as up to 1080p60 (Windows only). Variable refresh rate support is included.
Physically, the device measures 112 x 72 x 18mm (4.4 x 2.8 x 0.7 inches) and weighs 3.2 ounces. In the box, the reviewer found the Elgato 4K S unit, a single HDMI 2.0 cable, a single USB-C to USB-C cable, and a quick start guide—packaged in a single, well-secured Elgato-branded box.
The design is simple: a compact. rectangular unit with a clean black matte finish and a shiny Elgato icon centered on top. The capture card is only sold in black. and the reviewer didn’t mind. but noted that Elgato’s Stream Decks come in white as well as black—adding that they could see some consumers wanting a consistent look and would like white as an option in the future.
Ports are on the back for the HDMI input, HDMI output, and USB-C connection. On the front side are a 3.5mm analog line input and a power indicator light. There’s no external AC port or plug required. since the Elgato 4K S is bus-powered over USB-C—something the reviewer called out for cable management and clean workspaces.
When it came to actually capturing gameplay, the speed stayed impressive. Elgato recently released Elgato Studio software, described by the reviewer as polished and user-friendly, but basic. The key limitation: users cannot stream directly from it the way Streamlabs, OBS Studio, and others do. In the reviewer’s words, Elgato Studio is designed purely for capturing gameplay. The device “does that task well,” but the review focus remained on broader streaming and capture testing.
Back in OBS Studio. the workflow was straightforward: a scene was created. a new video input capture was added. and the Elgato 4K S option appeared immediately. After selecting it, the Nintendo Switch feed appeared in OBS Studio. An audio input capture for the Elgato 4K S followed, and then sound monitoring and output settings were tweaked. In less than 10 minutes. the reviewer said they were ready to hit “Go Live” in OBS Studio and stream Link’s Awakening if desired.
The same setup was tested with Streamlabs as well, and the reviewer said everything worked perfectly. They also argued that some capture card manufacturers use proprietary apps to gate-keep the hardware. but with Elgato the apps are add-ons that enhance the experience and provide deeper control without hiding or restricting functions.
In terms of video feel, the reviewer said they did not experience video or audio lag in the captures during their time playing—while also acknowledging the Nintendo Switch isn’t the heaviest test for a capture card like this.
They also did additional research beyond their testing and didn’t find issues that would prevent recommending the Elgato 4K S with beefier systems, including more powerful gaming PCs and consoles like the PS5 or Xbox consoles.
Capture quality was described as “staggering,” especially given the small package. The reviewer called it a fit for permanent residence in a home setup. and also as an added component for mobile gaming and streaming. They even described the realistic use case: taking it to gaming conventions. gatherings. and events for streamers on the go. both for live streaming and for capturing gameplay to publish later.
The drawbacks are clear and limited. The reviewer listed two main issues: system requirements and the inability of the device to capture HDCP-protected video.
Pricing lands at $159. The reviewer said it isn’t inexpensive. but also that it doesn’t break the bank and that. for them. the investment was worth it for the quality delivered. They recommended it for streamers leaning into console play as their driving source of content. writing that it delivers on the company’s claims.
The review also included a short list of pros and cons. Pros are described as a pure plug-and-play experience with no hassles. a small workspace footprint. dual HDMI connections for input and passthrough. reasonable price for the quality. and excellent fit for mobile streaming or capture setups. Cons are “older hardware excluded” and that Elgato software is for gameplay capture only.
The Elgato 4K S review rating is 4.5 out of 5.
Availability is straightforward: the Elgato 4KS is available in Elgato’s online store for $159 and also available from Amazon for a discounted $113.95.
Elgato 4K S capture card macOS OBS Studio Streamlabs Nintendo Switch HDMI 2.0 4K60 lag-free passthrough variable refresh rate HDCP