AsRock Z170 PRO4S Not Showing #4 PCIe settings
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=7534
Printed Date: 02 Aug 2025 at 10:57pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AsRock Z170 PRO4S Not Showing #4 PCIe settings
Posted By: Macronut
Subject: AsRock Z170 PRO4S Not Showing #4 PCIe settings
Date Posted: 02 Feb 2018 at 5:51am
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I cannot see the settings for the #4 PCIe slot. I see PCIe#1, 2, 3, & 5. Has anyone been up against this? So far, I've tried to upgrade firmware. Says I have current Firmware. MY PSU is 1000Watts. I want to run 5 RX 580 Video cards, and be able to tweak the PCIe link speeds for optimal use. The Board physically has 5 PCIe slots. Any help or suggestions would be great. BIOS & MOBO:   |
Replies:
Posted By: Macronut
Date Posted: 02 Feb 2018 at 8:20am
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OK, I have tried the BIOS update to 7.30 (Latest for this board) . It in itself was successful. However, I do not see the 4th PCIe slot settings. I'm starting to think I have a dud Mobo.... |
Posted By: wardog
Date Posted: 02 Feb 2018 at 2:00pm
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" rel="nofollow - But how many PCIe Lanes does the unknown proc of yours have? |
Posted By: Macronut
Date Posted: 02 Feb 2018 at 2:08pm
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" rel="nofollow - I'm not certain on that. How would I find this out? I'm starting to see that my CPU is my limitation with lanes with this ASROCK Z170 Board. |
Posted By: Macronut
Date Posted: 02 Feb 2018 at 2:24pm
| According to intels specs on my CPU it reads: |
Posted By: wardog
Date Posted: 02 Feb 2018 at 2:29pm
| Jackpot! |
Posted By: wardog
Date Posted: 02 Feb 2018 at 2:30pm
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Time to attempt using 5 PCIe 1x Risers I guess. |
Posted By: Macronut
Date Posted: 02 Feb 2018 at 2:34pm
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" rel="nofollow - I have risers. However does this solve my slot issue not showing up in mobo? |
Posted By: Macronut
Date Posted: 02 Feb 2018 at 2:36pm
What I meant was: will the risers enable the 4th slot to work even though it does not appear in my bios settings due to CPU limitation? |
Macronut wrote:Posted By: wardog
Date Posted: 02 Feb 2018 at 4:35pm
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" rel="nofollow - That, I can't say. Is it a PITA to just do it and find out instead of asking someone who doesn't have your setup? If not, contact: https://event.asrock.com/tsd.asp |
Posted By: Macronut
Date Posted: 02 Feb 2018 at 5:05pm
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No Doubt! Thanks, I have 4 cards detected thus far. |
Posted By: wardog
Date Posted: 02 Feb 2018 at 7:13pm
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" rel="nofollow - I take it slot 4 is working then? You made no mention it wasn't.......... |
Posted By: Macronut
Date Posted: 03 Feb 2018 at 3:48am
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Thus far I have 4- MSI Armor OC 4 Gig RX 580's up and running. PCIe slot #1 seems to be not working at this point. I am now going to tweak bios settings for PCIe slots. going to try and find the sweet spots for GEN1, GEN2, GEN3, and TOLUD sizes etc. for anyone watching this, my hardware is: - ASRock Z170 Pro4S LGA 1151 Intel Z170 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard - Rosewill Glacier Series 1000W Modular Gaming Power Supply with Silent Aero-Diversion Fan, 80 PLUS Bronze ... - Intel Celeron G3900 Skylake Dual-Core 2.8 GHz LGA 1151 65W BX80662G3900 Desktop Processor Intel HD Graphics 510 - HyperX Fury 8GB (2 x 4GB) DDR4 2400MHz DRAM (Desktop Memory) CL15 1.2V Black DIMM (288-pin) HX424C15FB/4 (Intel ... 5- MSI Radeon RX 580 DirectX 12 RX 580 ARMOR 4G OC 4GB 256-Bit GDDR5 PCI Express x16 HDCP Ready CrossFireX Support ... - ADATA 16GB S102 Pro Advanced USB 3.0 Flash Drive, Speed Up to 90MB/s (AS102P-16G-RGY) (Hard Drive) - 2 of 6-Pack PCI-E 16x to 1x Powered Riser Adapter Card w/ 50cm USB 3.0 Extension Cable & MOLEX to SATA Power Cable - GPU Riser Extender Cable - Ethereum Mining ETH -RioRand Plug Power Meter Energy Watt Voltage Amps Meter with Electricity Usage Monitor, Reduce Your Energy Costs Currently with 4 cards operating, I am mining ETH at: Hashrates97.1 MH/s |