diff --git a/docs/group_assignments/group2/assignment4.md b/docs/group_assignments/group2/assignment4.md
index a35763ce696114873e28ac5d7f7780d9efd80fac..620c069a316ff3894f5ff6bf9c053a4b576d5967 100644
--- a/docs/group_assignments/group2/assignment4.md
+++ b/docs/group_assignments/group2/assignment4.md
@@ -99,6 +99,12 @@ XIAO RP2040, XIAO ESP32C3, and XIAO SAMD2 are
     
 Since the processor clock speeds are different, it is interesting to calculate the signal frequency per processor speed.
 This is shown in the following table.
-![signalperclockspeed](./assets/assignment4/schematic_photos/speeds_table.jpg)
+
+||read in-out speed (MHz)|processor speed (MHz)|ratio|
+|---|---|---|---|
+|xiao RP2040|10.23|133|0.07692|
+|xiao ESP32C3|3.81|160|0.02375|
+|xiao SAMD21|3.69|49|0.07688|
+
 Table: Signal frequencies, the processor clock speeds, and the ratio of the signal frequency to the processor speed.