fvbounty
Hello there,
The SER8 8845HS rear USB4 port supports DP 1.4 Alt Mode, capable of outputting 5120×2160 (5K2K). 100Hz is possible but requires DSC 1.2a to be enabled.
The SER8 8845’s rear USB4 port is equivalent to USB4 v1 (40 Gbps), enabling PCIe Tunneling + DP 1.4 Alt Mode.
Step 1: Confirm Monitor Specifications
Check if the OSD indicates support for “DP 1.4 DSC” or “5K2K 100Hz+”.
Common compatible models: Alienware AW3926QW, LG 40WP95C (the latter only goes up to 72Hz).
Step 2: Connect the SER8 rear USB4 port using a USB4 certified cable.
- Recommended cable length ≤ 1.5m (small 5K2K bandwidth margin).
Step 3: Win11 Display Settings
Settings → System → Display → Advanced display settings
Select 5120×2160 resolution, 100Hz refresh rate (driver auto-negotiation DSC)
AMD Adrenalin → Display → Pixel Format → RGB 4:4:4
【If the monitor only runs at 60/75Hz】
Enable “High Bandwidth Mode”/“DSC” in the monitor’s OSD
Replace with a USB4 full-featured cable (to eliminate cable bottlenecks)
In Windows 11, go to Display Adapter Properties → List All Modes → Manually select 5120×2160@100Hz
Have a nice day~