• Pin1: Red (+5V power)

• Pin2: Blue (PWM)

• Pin3: Black (Ground)

• Pin4: Yellow (FG)  

• Pin1: 3.3V

• Pin2: Ground

• Compatible with Raspberry Pi official RTC Battery

• Jumpers fitted to Pin1-2 and Pin3-4 to route the I2C bus to the CAM/DISP 1 connector.

• Pin1-2: nRPIBOOT - if fitted, forces USB booting (useful if the eMMC becomes corrupted)

• Pin3-4: EEPROM_nWP - if fitted, write-protects the EEPROM on CM5.

• Pin6: SYNC_OUT - IEEE1588 timing pin. (can be configured as input).

• Pin8: USBOTG

• Pin10: PMIC_ENABLE

• Pin12: Connect a push button to wakeup or shutdown CM5.

•  Pin1, 3, 5, 7, 9, 11: Ground

• Notice: Risk of damage to the equipment due to electrostatic discharge. Always: Touch the working surface before touching electronics.

• Ideally: Use ESD protective equipment, such as ESD table mats and grounding cords.

• Place the board in front of you, the connectors facing to the top.

• Orient the CM5 as indicated by the arrow.

• Use the outline of the chips to help find the correct orientation of the CM5.

• Carefully place the CM5 without force.

• The CM5 should fall into place slightly when correctly aligned.

• Confirm the Compute Module is correctly mated by looking at each corner of the IO Board.

• Press the CM5 board onto the board-to-board connectors until it clicks into place.

• Make sure you press on both sides (the two long edges).

• This requires quite a bit of force. If you don't hear a loud click, it is most likely not fully seated.

• Do a visual check to make sure the CM5 is installed correctly: it needs to run parallel to the IO board.

• Clean the Surfaces: Use isopropyl alcohol and a lint-free cloth to wipe down both the chipsets and the heat sink.

• Inspect for Debris: Dust, oil, or residue can interfere with heat transfer, so make sure both surfaces are spotless.

• Choose the right pad thickness 

- RP1 and Ethernet IC: 1.5mm (LxW, 12x20.6mm)

- CPU: 0.3mm (LxW, 17x17mm)

- PMIC: 2mm (LxW, 10x10mm)

- WiFi module:  0.5mm (LxW, 13x10mm)

CAUTION! Using incorrect pad thickness may damage your CM5. 

• Cut open the packaging bag along all four edges, then carefully take out the thermal pad. 

• Carefully place the pad onto the chips, pressing gently to secure it and remove any trapped air bubbles.

• Carefully place the heat sink over the thermal pad, ensuring that it’s aligned and in contact with the pad’s surface.

• Align the mounting holes, Insert the four supplied M2.5 screws downward through the top of the heatsink., and tighten.

• Check for Gaps: Inspect to make sure there’s no visible space between the pad and surfaces. 

• Even Coverage: A well-fitted pad should provide even coverage with no shifting. 

• Insert the M.2 SSD into M.2 slot then slide the SSD drive into the M.2 slot at 30 degrees while pushing it gently till it fits into the slot. 

• Notice that after insertion into the M.2 slot, the SSD drive inclined angle to the board. 

• Press the M.2 SSD drive till it sits on the riser screw then lock it in place using the M2 mounting screw.