I have exact same issue on my ZE, I replaced DIMM2 card but still couldn't detect one of the drive, so it narrows down to the slot. I think the DIMM2 slots are common to fail. I went with Gigabyte X399 Xtreme after this.

tep1981 wrote:Sorry to jump on your topic but you say you have 3 NVMe in RAID, so the DIMM.2 does support RAID ? is this configured in the BIOS?Dimm.2 did support RAID but ever since I updated ZE to Bios 1402 for Threadripper 2 support, BIOS no lo...

vpkb1998 wrote:I routed the cable around the VRM Heatsink and plugged it into the CPU FAN, no issues. I would rather use the Pump fan but as you know the cable is too short.Regarding RAM, you should have no issues installing 8 DIMMs, the water hoses...

xiixexe wrote:How do you connect your NVME drives? I have running 1TB 960 Pro + 1TB Plextor M8Pe on DIMM.2, I'm getting ridiculous slow speed.Nevermind, I downloaded CrystalDiskMark 5.2.2, speed now seems to be better but still disappointing.

vsimone67 wrote:3 960 EVO in RAID 0I am hoping with future BIOS updates the performance gets better. @Saturn7, thank you for your help.How do you connect your NVME drives? I have running 1TB 960 Pro + 1TB Plextor M8Pe on DIMM.2, I'm getting ridiculo...