diff --git a/docs/wiki/fscope-dso-500k-4b-unpopulated.md b/docs/wiki/fscope-dso-500k-4b-unpopulated.md
new file mode 100644
index 0000000..bc4ef9d
--- /dev/null
+++ b/docs/wiki/fscope-dso-500k-4b-unpopulated.md
@@ -0,0 +1,53 @@
+---
+title: FSCOPE/DSO-500K Revision 4b and lower
+---
+
+### Unpopulated holes/pads
+
+> If you have Rev. 2 of the FSCOPE board please see [FSCOPE-250K-Rev2](fscope-250k-rev2)
+
+There will be some unpopulated holes/pads on your board. Depending on your board revision these may include:
+
+_H9, H10_
+
+These are tiny prototyping areas. One hole is connected to GND. The others are not connected to anything.
+
+_R32, R33_
+
+Extra current limiting resistors for the Wi-Fi and Trigger LEDS. Add resistors here (and possibly remove R30/R31) to adjust
+LED brightness.
+
+_SWCLK, SWDIO_
+
+Debug headers
+
+_H11_
+
+Not used
+
+_+3.3V, VSYS_
+
+Test points
+
+_-2.5V_
+
+Test point for the -2.5V rail. Do not draw current from this rail as it will adversely affect the performance
+of the oscilloscope.
+
+_H17, RESTART_
+
+Shorting these will restart the Pico (W). A momentary switch could be soldered to these holes/pads to make it easier to restart
+the oscilloscope.
+
+_H7, H15, R35, R36_
+
+For connecting external Wi-Fi and Trigger LEDS if the board is to be enclosed in a case.
+
+_H16, R32_
+
+For connecting an external status LED if the board is to be enclosed in a case (no firmware support for this as yet).
+
+## See also
+{% include wifi-links.md %}
+
+{% include scoppy-links.md %}
diff --git a/docs/wiki/fscope-dso-500k-v2-usage.md b/docs/wiki/fscope-dso-500k-v2-usage.md
index 731a305..1798df4 100644
--- a/docs/wiki/fscope-dso-500k-v2-usage.md
+++ b/docs/wiki/fscope-dso-500k-v2-usage.md
@@ -67,26 +67,11 @@ See [here](fscope-dso-500k-dimensions)
#### Unpopulated holes/pads
> If you have Rev. 2 of the FSCOPE board please see [FSCOPE-250K-Rev2](fscope-250k-rev2)
+
+> If you have Rev 4, 4a or 4b please see [FSCOPE-500K 4b](fscope-dso-500k-4b-unpopulated)
There will be some unpopulated holes/pads on your board. Depending on your board revision these may include:
-_H9, H10_
-
-These are tiny prototyping areas. One hole is connected to GND. The others are not connected to anything.
-
-_R32, R33_
-
-Extra current limiting resistors for the Wi-Fi and Trigger LEDS. Add resistors here (and possibly remove R30/R31) to adjust
-LED brightness.
-
-_SWCLK, SWDIO_
-
-Debug headers
-
-_H11_
-
-Not used
-
_+3.3V, VSYS_
Test points
@@ -96,19 +81,19 @@ _-2.5V_
Test point for the -2.5V rail. Do not draw current from this rail as it will adversely affect the performance
of the oscilloscope.
-_H17, RESTART_
+_H17_
-Shorting these will restart the Pico (W). A momentary switch could be soldered to these holes/pads to make it easier to restart
-the oscilloscope.
+Restart/Reset. Shorting these will restart the DSO-500K. A momentary switch could be soldered to these holes/pads to make it easier to restart the oscilloscope. Double clicking the switch will cause the Pico W on the DSO-500K to enter USB mass storage mode.
-_H7, H15, R35, R36_
+_H7, H15_
For connecting external Wi-Fi and Trigger LEDS if the board is to be enclosed in a case.
-_H16, R32_
+_H9, R32_
For connecting an external status LED if the board is to be enclosed in a case (no firmware support for this as yet).
+
#### Miscellaneous
The holes at the corners of the board are 3.3mm (130 mil).