The supplied DR HDMI 8K manual describes Full UHD operation up to 8K60 / 4K120-class signals within a 1500MHz / 48Gbps HDMI 2.1 link. It also lists FRL status reporting and EDID controls designed for these high-bandwidth workflows.
What 48Gbps / 1500MHz means here
The manual specifies 1500MHz / 48Gbps pass-through and gives examples including 4K120 4:4:4 10-bit and 8K60-class formats. The exact signal that works in a real installation still depends on the full chain and the chosen chroma, bit depth and feature set.
FRL becomes part of the diagnosis
When an FRL signal is active, DR HDMI 8K reports the FRL rate. In the EDID modification controls, the maximum advertised FRL rate can also be changed. That gives you a way to test whether a lower negotiated link mode changes stability.
4K120, VRR and ALLM
The manual exposes VRR and ALLM as EDID flags. In a gaming chain, these features only work when the source and downstream equipment support them, but an EDID manager lets you determine whether they are being advertised to the source.
8K / 4K120 cable requirements
The manual is explicit: use a certified or tested 1500MHz HDMI 8K cable in copper or fibre when setting up a 1500MHz / 48Gbps link. A device in the middle of the chain does not remove that requirement.
Why a lower EDID can be a useful test
If a 4K60 or reduced-FRL preset is stable while the target high-bandwidth profile is not, you have narrowed the failure to the higher-bandwidth or higher-capability state. That is far more useful than simply knowing that “HDMI does not work.”
Frequently asked questions
Does DR HDMI 8K support 4K120?
Yes. The manual lists support up to 4K120 4:4:4 10-bit within its supported bandwidth.
Does it support 8K60?
Yes. The manual lists 8K60-class formats and 1500MHz / 48Gbps operation.
Can it show the active FRL rate?
Yes. The OLED and signal information described in the manual report FRL rate when an FRL signal is active.
Need the hardware?
Open the DR HDMI 8K product page on HDfury.uk.