HP Z420 LPC Pinout

[rsaxvc]

Do you know where I can find the pinout of the LPC bus(connector E17) on HP Z420 workstations? Looking at adding an ISA slot.

[rsaxvc]

Is it just the Foxconn 20(-1) LPC pinout?

[DGroves]

go on ebay and find the power wire harness, you will need this as the cable also contains the ambient temp sensor that controls the case fan speed

Power Switch and Sensor Cable HP part# 663218-001 or 663073-002

[rsaxvc]

I'm not sure what you mean. Neither of those would connect to the LPC header.

[DGroves]

sorry, posted wrong reply to your post.

your motherboard may not have a LPC header, and if it does i suspect it's not documented

https://h10032.www1.hp.com/ctg/Manual/c04205252.pdf

https://www.aliexpress.com/i/2251832851533890.html?gatewayAdapt=4itemAdapt

[rsaxvc]

No worries.

It does have an LPC header, it's E17. The more I look at it, the more I think it might just be the Foxconn pinout. I might have to poke it with a logic analyzer to make sure.

That AliExpress link is interesting, and might work too, thanks!

[DGroves]

let the forum know if either item works for you