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Easy troubleshooting steps to resolve PCIE 4.0 connec-
tion issues:
Step 1: Update BIOS on both Motherboard and GPU
Update to the newest firmware / BIOS / software for the motherboard and GPU. The
newest update can be obtained from the manufacturer's website.
Step 2: Set BIOS to optimal default
Overclocking is the main reason for the system to become unstable in Gen 4 setting.
Reset BIOS to optimal default may resolve the issue and allow the system to run under
Gen 4 without issue.
Step 3: Try to boot without the riser cable
Make sure the system can boot properly without the riser cable.
Step 4: Clean the connector contacts on the riser cable and GPU
Cleaning the connector contact (Gold Fingers) on both GPU and riser cable with rubbing
alcohol to remove possible particle build-up.
Step 5: Ensure the cable is fully and securely inserted into the socket
Please make sure the male connector (Gold Fingers) is fully inserted into the mother-
boardʼs PCIe socket. Our riser has a very short pin designed to provide better insertion
loss. The pins may not be in full contact with the PCIe socket pins resulting in signal lanes
drop from x16 to x8, or worse at x4 speed. Make sure you choose the right length cables.
Too long or too short may both result in performance loss.
Step 6: Try a different PCI-e slot (Always choose the PCIe slot closest to the CPU)
If the motherboard has multiple Gen 4 PCIe slots, try to install the cable on a different
slot.
Step 7: I have done all of the above and Iʼm still having trouble with the riser cable
PCI-E specifications do not regulate the use of a riser cable. As a result, Gen 4 mother-
boards are designed to connect the GPU directly. Hence leave a limited headroom for the
use of a riser cable, and the use of a riser cable may fail when the insertion loss is over the
limits due to poor components used in motherboards. Not all motherboards and GPUs are
manufactured to the same quality, some have higher headroom than the other.
In these rare cases, the easiest ways to resolve the problem are:
Exchange another riser cable to try. (If shorter length works, always choose a shorter
length)
Exchange another motherboard of the same brand.
Exchange motherboard for a different brand. (99% of the customers have completely
resolved the issue at this point)
If none of these works, please get in touch with us directly and provide us with
your system information (model/make of MB, CPU, GPU, PC case). We are happy to
provide a solution.
解决PCIE 4.0连接简单故障排除步骤
步骤1：更新主板和GPU的BIOS
更新到最新的主板和GPU固件/BIOS/软件。最新的更新可以从制造商的网站上获取。
第2步：将BIOS设置为最佳默认值
超频是导致系统在第四代设置中变得不 定的主要原因。将BIOS重置为最佳默认值可解决这个
问题，并使系统在第4代下运行没有问题。
第3步：尝试在没有竖插电缆的情况下启动
确保系统在没有竖插电缆的情况下能够正常启动。
第4步：清洁竖插电缆和GPU上的连接器触点
用酒精清洁GPU和竖插电缆上的连接器触点（金胶针），以清除灰尘堆积。
第5步：确保电缆完全并牢固地插入插座中
请确保公头连接器（金胶针）完全插入主板的PCIe插座中。竖插有非常短的针脚设计，以降低
损耗。如果针脚与PCIe插座接触不良，会导致信号通道从x16下降到x8，甚至x4速度。确保电
缆长度适中。太长或太短都可能导致性能损失。
第6步：尝试不同的PCIe插槽（选择最靠近CPU的PCIe插槽）。
如果主板有多个第4代PCIe插槽，尝试将电缆安装在不同的插槽上。
第7步：完成上述尝试后，如果竖插电缆仍然有问题
PCI-E规范没有规定使用竖插电缆的模式。因此，第4代主板设计为直接连接GPU的方式，留
给使用竖插电缆的空间有限，当插入件损耗超过限制时，竖插电缆可能受到因主板中使用的不
良部件的影响而失效。各类主板和GPU质量之间会有差距，有些主板和GPU的净空要相对高一
些。
在这些特殊情况下，解决问题的最简单方法是：
尝试更换竖插电缆。(建议选择较短的适用长度)
尝试更换另一品牌的主板，(更换后99%的客户会完全解决这个问题)
如果这些方法都不行，请直接与我们联系，并提供你的系统信息（MB的型号/品牌、CPU、
GPU、PC机箱）。我们很高兴在线为您提供解决方案。
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