The 1 in 2 out HDMI splitter splits an HDMI input signal onto two displays, and the two HDMI output signals are synchronized, 8K@60Hz, 4K@120Hz and 1080P@120Hz synchronous work. Designed to handle 8K@60hz, 4K@120Hz, 1080p@240Hz. NOTE: 1* This item is not available for PC to extended display, Duplicate/Mirror Only. 2* NON-bidirectional, does NOT support 2 in 1 out. 3* NOT HDMI SWITCH. Supports 8K@60Hz resolution, dynamic HDR and VRR technology. HDMI 2.1 splitter 1 in 2 out can output 8K simultaneously. Or adaptively output 8K/ 4K, When the resolutions of the two monitors are different, for example, one is 8K@60Hz and the other is 4K@120Hz, the two screens will display 8K and 4K respectively, but not both will display 4K. *Please prioritize connecting the highest resolution monitor to HDMI Output 1 port. HDMI 2.1 Splitter supports multiple resolution up to 8K@60Hz 4K@120Hz 5120x1440@120Hz 1080P@240Hz 4:4:4 8bit VRR ALLM HDR10 HDCP2.3 Dolby vision, 3D effect. High speed 48Gbps video bandwidth. Audio Format: Supports Dolby Atmos, DTS X, Dolby True HD, DTS-HD Master Audio, PCM7.1. Support Freesync/Gsync. HDMI 2.1 Splitter 1 In 2 out can compatible with partly HDMI device such as RTX 3090, MacBook Pro 16' 2023 (M3 Pro), Macbook Pro 16' 2023 (M2 Pro), Macbook Pro 16' 2021 (M1 Max), Mac Mini (2020)(M1), Dell Latitude 7420, Acer N20H3, HP ZBook Firefly 15G8, HP ZBookPower G10A, Lenovo ThinkPad X1 Yoga Gen7(EVO), Lenovo ThinkPad X13 Gen2(EVO), Lenovo ThinkPad L13 Gen2, LG gram 16Z90SE(EVO), Sony PS5, XBOX ONE, Philips 436M6VBR, Samsang U28R550UQ, LG 43UD79, ASUS ROG STRIX XG43UQ, ACER XV282K , DELL 2723, HP Z27KG3, LG 55CXPCA, Samsung QA50Q60AA, SONY XR-75Z9J, Acer XB283K, Lenovo Lecoo K2721PL, LG 27UP850N, BenQ PD2705U. If you encounter incompatibility, you can search for firmware updates on the website or contact us at any time.