Antminer S9 SE 2 functional hashboards but they won't cooperate...

Hey everyone I'm running into a problem with my S9 SE. I've got two working hashboards; they function fine when they're each plugged in separately. But when I connect both at the same time, I get this error message: 2025-02-19 10:22:17 driver-btm-soc.c:969:check_hashboard_hardware_info: error! chain[1] hashboard hardware info is wrong! 1 != 0 2025-02-19 10:22:17 driver-btm-soc.c:7429:bitmain_soc_prepare: bitmain soc init failed. 2025-02-19 10:22:17 util.c:2178:process_version_mask: Pool 0 Version num is 2 2025-02-19 10:22:18 driver-btm-soc.c:7104:send_job: Version num 2 Anyone have any ideas on what might be causing this?