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+# Mainboard
+
+## Hubboard
+
+| Pin | Signal   | Type                 | Notes                         |
+|-----|----------|----------------------|-------------------------------|
+| 1   | 5VS_SW   | USB Power            | Controlled by EC.             |
+| 2   | 5VS_SW   | USB Power            | Turned on if all modules      |
+| 3   | 5VS_SW   | USB Power            | are populated.                |
+| 4   | 5VS_SW   | USB Power            |                               |
+| 5   | 5VS_SW   | USB Power            |                               |
+| 6   | GND      |                      |                               |
+| 7   | GND      |                      |                               |
+| 8   | GND      |                      |                               |
+| 9   | MUX_A0   | Mux control 0        | Select which board ID to read |
+| 10  | MUX_A1   | Mux control 1        |                               |
+| 11  | MUX_A2   | Mux control 2        |                               |
+| 12  | GND      |                      |                               |
+| 13  | DP_1     | USB Port 1           |                               |
+| 14  | DM_1     | USB Port 1           |                               |
+| 15  | GND      |                      |                               |
+| 16  | DP_2     | USB Port 2           |                               |
+| 17  | DM_2     | USB Port 2           |                               |
+| 18  | GND      |                      |                               |
+| 19  | DP_3     | USB Port 3           |                               |
+| 20  | DM_3     | USB Port 3           |                               |
+| 21  | GND      |                      |                               |
+| 22  | DP_4     | USB Port 4           |                               |
+| 23  | DM_4     | USB Port 4           |                               |
+| 24  | GND      |                      |                               |
+| 25  | DP_5     | USB Port 5           |                               |
+| 26  | DM_5     | USB Port 5           |                               |
+| 27  | GND      |                      |                               |
+| 28  | TP_INT_1 | Touchpad Interrupt   | On touchpad pogos             |
+| 29  | TP_INT_2 | Reserved Interrupt   | On touchpad pogos             |
+| 30  | I2C_SDA  | Touchpad I2C         | On touchpad pogos             |
+| 31  | I2C_SCL  | Touchpad I2C         | On touchpad pogos             |
+| 32  | AGND     | Analog ground shield |                               |
+| 33  | GPO_MUX  | Analog Mux input     |                               |
+| 34  | 3VALW    | Analog mux power     |                               |
+| 35  | SLEEP#   | High S0, else low    |                               |