From d6f943f654add1805947fc94766c69288e582bb3 Mon Sep 17 00:00:00 2001
From: nuclearcat <nuclearcat@nuclearcat.com>
Date: Sun, 9 Feb 2025 23:19:00 +0000
Subject: [PATCH] Add hardware guide

---
 hardware.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 hardware.md

diff --git a/hardware.md b/hardware.md
new file mode 100644
index 0000000..a259760
--- /dev/null
+++ b/hardware.md
@@ -0,0 +1,19 @@
+## How to verify PCIe slot
+
+If you install card in 4x lane PCIe slot, while card designed for 8x PCIe, most likely your card wont be able to reach max bandwidth and will drop packets due PCIe bus bandwidth limit.
+
+```
+pppoe01 ~ # cat /sys/class/net/eth3/device/current_link_width 
+8
+pppoe01 ~ # cat /sys/class/net/eth3/device/max_link_width 
+8
+```
+This means card working on maximum PCI lanes
+
+```
+pppoe04 ~ # cat /sys/class/net/eth5/device/current_link_width 
+4
+pppoe04 ~ # cat /sys/class/net/eth5/device/max_link_width 
+8
+```
+And here you can see card working in PCIe 4x lanes slot, while it supports 8x.
\ No newline at end of file