# Pironman 5 pro max Issue with driving two HDMI ports at 3840x2160 **URL:** \ **Category:** General\ **Created:** [April 10, 2026, 4:38am UTC](https://forum.sunfounder.com/t/pironman-5-pro-max-issue-with-driving-two-hdmi-ports-at-3840x2160/4545 "2026-04-10T04:38:57Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Korsair2000](https://avatars.discourse-cdn.com/v4/letter/k/47e85d/32.png) [@Korsair2000](https://forum.sunfounder.com/u/Korsair2000)\ **Post date:** [April 10, 2026, 4:38am UTC](https://forum.sunfounder.com/t/pironman-5-pro-max-issue-with-driving-two-hdmi-ports-at-3840x2160/4545/1 "2026-04-10T04:38:57Z")
I just received my Pironman 5 Pro Max. I do really like the setup. It was easy. The issue I noticed that one monitor can be set to 3840x2160 but the second monitor can only be set to 1920x1080. The DSI monitor is set to 800x400. My Pironman 5 Pro drives two HDMI ports at 3840x2160. I have tried to swap cables around to see if it follows the cable or not. Cables that can display 3840x2160 on Pironman 5 Pro can not on the Pironman Pro Max. I tried to remove the DSI monitor and it can still only drive 1 monitor at 3840x2160 the second HDMI port is at 1920x1080 So the cables and monitors appear to be good (on the Pironman 5 Pro) and fails on Pironman 5 Pro max. All of the software has been installed. Everything else works for the most part. (the only other issue is the LEDs on one of the fans). I plan to write up the LEDs in another thread. I wanted this one for the HDMI ports. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [April 16, 2026, 7:37am UTC](https://forum.sunfounder.com/t/pironman-5-pro-max-issue-with-driving-two-hdmi-ports-at-3840x2160/4545/2 "2026-04-16T07:37:48Z")
Thank you for bringing this to our attention. We tested it, and indeed, on the Pironman 5 Pro Max, the HDMI1 port drives a 3840x2160 display, while the HDMI0 port drives a 1920x1080 display. We are currently looking into the cause. That said, the Pironman 5 Max is indeed capable of driving two 4K displays.