HP Z440 Slot 4 Not working

[NiteOwl_OvO]

I have an HP Z440 with latest BIOS. Proxmox VE installed on Z Turbo. I got 2 4-port HPE Gigabit NICs for virtual servers. Only 1 card will work when both are installed. Whatever card I put in slot 4 is not detected. The Z Turbo and NICs each work if they are in slot 3 or 5. I would like to have both NICs installed for my Proxmox server. Proxmox will boot with the Z Turbo in slot 3 or 5 and will detect the NIC in either slot 3 or 5. The NIC I put in slot 4 does not work. Is there some setting that will get my NIC to work in slot 4?

Note: The system had corrupted BIOS when I received it. Flashing to latest BIOS fixed that. New CMOS battery as well. Reset to default settings. Enabled virtualization. Slot 4 shows enabled in BIOS with defaults. I tried an NVS 310 video card, but that caused all kinds of problems with the BIOS. Switched to the HD6450 and everything works, except slot 4.

E5-1620 V4

48 Gb RAM Hynix with HP stickers

Z Turbo 256 Gb Samsung SSD

2 x HPE 4-port Gigabit NICs

Asus HD6450 Silent Video Card

700W Thermaltake PSU with adapter cable.

[DGroves]

are the nics server model cards? please post the card model

quite a few server nics have custom  SMbus routines that are not compatible with any other system except for the system(s) they were made for and when used in other systems will cause weird errors like missing ram and non working pci-e slots

you can tape over these pins on the cards ( b5 and b6) located on the top side of the card or replace the cards with workstation or retail model type cards

[NiteOwl_OvO]

HP 647592-001

As already mentioned, One of these is working fine. Proxmox sees all 4 ports with the NIC in slot 5. I currently have one port plugged in on that card it is it active.

From shell in proxmox:

dmesg | grep tg3
[ 1.139815] tg3 0000:03:00.0: enabling device (0100 -> 0102)
[ 1.156363] tg3 0000:03:00.0 eth0: Tigon3 [partno(647592-001) rev 5719001] (PCI Express) MAC address 98:f2:b3:10:1a:e4
[ 1.156366] tg3 0000:03:00.0 eth0: attached PHY is 5719C (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[1])
[ 1.156368] tg3 0000:03:00.0 eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[1] TSOcap[1]
[ 1.156370] tg3 0000:03:00.0 eth0: dma_rwctrl[00000001] dma_mask[64-bit]
[ 1.156428] tg3 0000:03:00.1: enabling device (0100 -> 0102)
[ 1.175221] tg3 0000:03:00.1 eth1: Tigon3 [partno(647592-001) rev 5719001] (PCI Express) MAC address 98:f2:b3:10:1a:e5
[ 1.175225] tg3 0000:03:00.1 eth1: attached PHY is 5719C (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[1])
[ 1.175227] tg3 0000:03:00.1 eth1: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[1] TSOcap[1]
[ 1.175228] tg3 0000:03:00.1 eth1: dma_rwctrl[00000001] dma_mask[64-bit]
[ 1.175284] tg3 0000:03:00.2: enabling device (0100 -> 0102)
[ 1.191119] tg3 0000:03:00.2 eth2: Tigon3 [partno(647592-001) rev 5719001] (PCI Express) MAC address 98:f2:b3:10:1a:e6
[ 1.191122] tg3 0000:03:00.2 eth2: attached PHY is 5719C (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[1])
[ 1.191124] tg3 0000:03:00.2 eth2: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[1] TSOcap[1]
[ 1.191125] tg3 0000:03:00.2 eth2: dma_rwctrl[00000001] dma_mask[64-bit]
[ 1.191176] tg3 0000:03:00.3: enabling device (0100 -> 0102)
[ 1.207068] tg3 0000:03:00.3 eth3: Tigon3 [partno(647592-001) rev 5719001] (PCI Express) MAC address 98:f2:b3:10:1a:e7
[ 1.207072] tg3 0000:03:00.3 eth3: attached PHY is 5719C (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[1])
[ 1.207073] tg3 0000:03:00.3 eth3: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[1] TSOcap[1]
[ 1.207075] tg3 0000:03:00.3 eth3: dma_rwctrl[00000001] dma_mask[64-bit]
[ 1.260503] tg3 0000:03:00.1 ens5f1: renamed from eth1
[ 1.284727] tg3 0000:03:00.0 ens5f0: renamed from eth0
[ 1.368558] tg3 0000:03:00.2 ens5f2: renamed from eth2
[ 1.388699] tg3 0000:03:00.3 ens5f3: renamed from eth3

[NiteOwl_OvO]

Quick Specs for the Z440 Workstation shows the Intel I350-T4 is compatible. I ordered one. I will see if it will work in slot 4. The HP 647592-001 331T 4-port works in slot 5. I also ordered a cheap retail 4-port x1 card. I will try that in slot 1. It won't be fast, 0.5 Gb.

[NiteOwl_OvO]

Follow-up: I tried a retail card and a card from the HP Quick specs that is compatible with the Z440. Nothing works in slot 4. All of these cards work in other slots. This seems to be an issue with the motherboard.

HP Z Turbo G2 x4

HP 331T 4-port NIC x4 

Intel I350T4 4-port NIC x4

Retail Generic 4-port gigabit Realtek chip NIC x1