Messages

No option, bios is soldered.

Thank you for the idea, hp forum say in this case (no screen a after boot) make bios update via usb. I had no success. Could a change of bios possible, 10 pound from China.

Dear hen6e

don´t use your fan (6 pin) without changing the connections pin 5 and 6 and 1.

You could kill the mobo, I had it 5 min switched on and it was very "warm" in the near of the fan.

I have 1 and a half running systems.
During the first switch on was the same problem like Z440 Mobo,
no screen , boot precedure stopped with memory error.

But the A99-a has a very nice manual and I was able to make
a bios update.... The system runs stabil. I was happy to use my
reg ECC DDR4 2400 RAM. Installing Windows 10 64 bit with USB-Stick
where without complications with the ssd corsair MP500 240 GB.

first:
Motherboard Asus A99-a
Intel Xeon e5-1620 v4
Cpu fan noctua 14cm
Ram Kingston reg ecc KTH-PL424 2 x 8 GB
Corsair MP500 240 GB SSD with adapter for m.2 scsi
Monitor lg 43ud79-b
Pny quadro p1000
Power supply atx 550W
ATX Tower (old)

half system for selling or storage:
Power supply for z440 tested could not find any mistakes
Motherboard Z440 (no idea to flash the bios because no manual)
adapter for ssd
Tower Z600 (empty)
Adapter for Z420 Mobo 24 pin to 18 pin
2 connectors 12 pin

Thank´s all for the interest. Excuse me for not supporting you in reading
the power supply ID, I don´t know how.

Cpu fan 6-pin connector

If pin 5 would be RPM for second fan
If pin 6 would be PWM for second fan

It would be not the best idea to connect with pin 1,

May be it's better leave pin 6 and connect pin 3 with pin 5

I try to build a working place for autocad and 3d studio max.

My first idea

Motherboard z440
Intel Xeon e5-1620 v4
Cpu fan noctua
Ram Kingston reg ecc KTH-PL424 2 x 8 GB (one bank1 one bank
Corsair MP500 240 GB SSD with adapter for m.2 scsi
Monitor lg 43ud79-b
Pny quadro p1000
Power supply atx with adapter

First change (because of don't found the right adapter)
Power supply for z440

Second change
Motherboard asus x99-a
Power supply atx
No adapter for ssd

I hope next week I will be ready for work.

I am not sure if the connection of 651 of fan connector is right.

Your pin descriptions could be right, but I am not able to organize a oscillograph.
This 11V pin (old) is z440 the only one connection to the power supply with 5 V.

I will change the mainboard because of defect. That's why I have a power supply for z440 available for 145 GBP + delivery costs, sombody interesting in buying?

Thanks a lot,

I have tested the P1 , it is total different to z420... I could not find any 11 V and there is a special problem for the 5V - only one cable, the motherboard decided, "now I give 5V free for using".

The boot process stopped by switching on the cpufan, no voltage on USB for making bios update and no signal to the nvidia p1000 graphic card.

I will check the connection of 6.5.1 and try it again. I hope, the mainboard is not defect. I am angry because of chassi ID or other blocking ideas of HP engineers.

I am able to give you the pinout of P1 but some pins are going directly to sata...

May be I found the answer for the cpu fan 6 pin connector?

Could be the same like z800, found in mobohack z800

I have attached pictures from the power supply.

P2 Connector

upper row
green green white white orange orange 
   1       2        3      4        5         6
down row 1-4 connected together in one point grnd connected together in second point (all black)


see attached pictures

green V12-CPU2
white V12-CPU0
orange V12-M

I have found only this adapter, but long time delivery

https://www.aliexpress.com/item/High-Quality-new-ATX-24Pin-to-18Pin-8pin-to-12pin-Adapter-Power-Supply-Cable-for-HP/32830069041.html

Excuse for late reply, I was on holiday trip.

Thank you for the pinout you are right, I have checked it with the cables of the original power supply. For the 18 pin connector I cannot find out the pinout on this way, but I think it is the same like for older version z620 z820. It is possible to by adapter for low price (company adaptere).

The next problem is the cpu fan, 6 pin ! My fan has only 4 pin.

see attachments

I have bought a power supply for z440 and I will make a measure.

some pictures in attechement

Hi I am Roy from Berlin.

I try to find the pinout for the p2 connector, p1 ist the 18 pin connector for Main Board power,
P2 is the 12 in cpu0 memory connector. I have ordered the Adapter atx- 18 pin, but I can't find the right thing p2 connector. I bought a 12 pin cable with the right connector, but I need the pin out. There was a project with a hp z800, but the p2 connector is different, only 10 pins.

Thank you