Govee HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
SpecPicks Verdict
SpecPicks classifies Govee HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports… as a solid pick with broad community endorsement in the rgb & lighting category, based on 569 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for rgb & lighting of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.3★ customer rating
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Latest HDMI 2.1 Interface: Govee AI Sync Box 2 adopts the latest HDMI 2.1 interface for data transmission, enabling screen and lighting synchronization, and supporting resolutions of up to 8K at 60Hz and 4K at 144Hz. Note: Automatic signal switching is not supported when multiple devices are connected.
- Unique CogniGlow Technology: Govee Sync Box uses AI to automatically recognize images and text, determining trigger conditions to match specific lighting effects. HDMI 2.1 Sync Box supports VRR and ALLM, reducing screen tearing and latency, providing a seamless experience.
- RGBWIC Four-Color Mixing: An RGBWIC LED light strip ensures purer white light and accurate color blending for vibrant effects, making it better suited for game visuals.
- High-Density Light Strip: With 75 LEDs/m and a brightness of 450 lumens/m, the high-density light strip cooperates with our Sync Box to provide a brighter and more comfortable experience.
- Matter Support: Seamlessly integrates with multiple smart ecosystems, supporting convenient voice control.(Only lighting-related functions are supported).
- DreamView: Synchronize colors across multiple Govee lights to create an immersive gaming environment. Equally supports Dolby vision and Doldy atmos.
Full Specifications
| Size | 11.8FT for 55"-65" TV |
|---|---|
| Brand | Govee |
| Color | Black |
| Style | Modern |
| Theme | Christmas |
| Material | Polycarbonate |
| DreamView | Synchronize colors across multiple Govee lights to create an immersive gaming environment. Equally supports Dolby vision and Doldy atmos. |
| Model Name | H6604B |
| Style Name | Modern |
| Unit Count | 1.0 Count |
| Item Length | 11.8 Feet |
| Light Color | Multicolor |
| Light Source | LED |
| Model Number | H6604B |
Ready to buy?
Govee HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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