Raspberry Pi 4B/3B+/3B X735 V2.0 Safe Shutdown Power Management & Auto Cooling Expansion Board

Regular price $35.99 $30.99

Availability: Available Unavailable

Product Type: Raspberry pi

Product Vendor: Geekworm

  • Intelligent and safe power management,equipped with both momentary button and latching switch for easy power control
  • For Use With: Raspberry Pi 4 Model B/Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+ / 3 Model A+
  • Operating System: Raspbian Stretch; Safe shutdown function tested for Raspbian, other operating systems to be tested and advised
  • Auto cooling function: AutoControl the fan for Cooling / quiet Operation
  • Reserved 40pin stackable Header for AddOn Boards
  • Power supply: 5.1Vdc +/-5%,2.5~4A

Product Details

This is a late promise, and the X735 is finally here in April 2019.

We always want to provide safe shutdown, power management and other functions for our old series products, such as X820/X850. Due to various restrictions and considerations, we did not upgrade the old products, but chose to provide the functional expansion board for the old products. This is the original intention of the X735. With the arrival of the X735, the X860/X870/X852/X822 was released together.

The X735 board can be used with X820 kit and X850 kit, please refer to:

Click to get: Raspberry Pi X820 V3.0 2.5 inch SATA Storage Board + DC 5V 4A Power Supply + Metal Case Kit

Click to get: Raspberry Pi X850 V3.0 mSATA SSD Storage Board + Metal Case with Cooling Fan Kit

The X735 is a multifunctional expansion board for all current models of the Raspberry Pi using a 40-pin header. It provides intelligent and safe power management, safe shutdown and full poweroff through software, an automatic temperature controlled fan which enables the use of the Raspberry Pi in extreme conditions including very high temperature environments. The X735 also reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards for enhanced applications.

WIKI for reference: www.raspberrypiwiki.com/index.php/X735

1. Full poweroff through software is not supported when using latching power switch.
2. Do not apply power to your Raspberry Pi via the Pi's Micro-USB socket.

3.For the safe shutdown script, please refer to: www.raspberrypiwiki.com/index.php/X735#Document

Key Features

  • For Use With: Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+ / 3 Model A+/Raspberry Pi 4 Model B
  • Operating System: Raspbian Stretch
  • Safe shutdown function tested for Raspbian, other operating systems to be tested and advised

Intelligent and safe power management
  • Equipped with both momentary button and latching switch for easy power control
  • Press the momentary button to turn on
  • Press the momentary button and hold for 1~2seconds to reboot
  • Press the momentary button and hold for 3~7seconds to implement safe shutdown
  • Press the momentary button and hold for >8seconds to force shutdown
  • Supports safe shutdown and full poweroff through software
  • Onboard switch convenient to select latching or momentary power control switches
  • Press the latching power switch once to turn on and again to implement safe shutdown
  • Onboard LED shows the status of power on, reboot and shutdown
  • Onboard PH2.0 connectors allows to use external latching switch or momentary button
  • Powers the Raspberry Pi via the 40pin header no additional cabling required
  • Allows power input via DC jack or MicroUSB socket or XH2.54 connector
  • Allows power output via XH2.54 socket and or the 40pin header

Auto cooling function

  • Dual trip point temperature controlled cooling fan
  • AutoControl the fan for Cooling / quiet Operation
  • Board temperature ≤34C Fan running at low speed
  • Board temperature ≥34C Fan running at medium speed
  • Board temperature ≥45C Fan running at full speed
  • Onboard LEDs show the status of fan running low and high
  • No driver and additional setting required for the cooling fan


  • Reserved 40pin stackable Header for AddOn Boards
  • Works with all current models of the Raspberry Pi using a 40 pin header
  • Onboard microUSB socket for power input No need to change the power adapter
  • Fully compatible with our products X820, X850, X860, X870, X822, X852 to provide intelligent and safe power management

Compatible With:


  • Power supply: 5.1Vdc +/-5%,2.5~4A
  • Board size: 65 x 58mm

Packing List

  • 1 x X735 v2.0 Board
  • 8 x Screw M2.5*6
  • 4 x Spacer F/M M2.5*12+6
  • 4 x Spacer F/F M2.5*12

    Product Reviews

    Shipping & Returns


    1. All orders will be shipped within 48 hours on receipt of cleared payment on Woking Days. (From Moday to Friday in 24-48 hours as usual, Except for Chinese legal holidays or big holidays or Weekend)
    2. If you need faster shipment, please choose DHL or EMS or FedEx IP etc(Shipping fare paid by yourself). Or we will deliver via the default method of standard shipping.(Usually by China Post Registered Air Mail with tracking number if the order ammount is more than $9.99); Please contact us to calculate the shipping cost by faster shipping way like DHL, EMS or FedEx...
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    [Return Policy]

    1. If you didn't receive your product or it is significantly different to the description, we guarantee to resend new or refund your payment. But due to the shipping delays of international shipment, we hope to get your understanding and wait for some more time.
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    8. We accept to refund or resend new for our customers as product quality problem. But for the product value above $30, buyer must return the product to get a refund, the return shipping cost should be negotitated between the buyer and seller as this is a international shipping.



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