M.2 M Key to PCIex4 Expansion Board

Sale price A$35.02   Inc. GST
33 units Ships in 7 to 10 days

This is an M.2 M Key to 4-way PCIe expansion board specially prepared for LattePanda Sigma users. It effectively solves the problem of insufficient PCIe interfaces. It is driver-free and plug-and-play. It can be used with the Sigma motherboard to expand 4 channels of PCIe interfaces to connect external multi-channel graphics cards or other PCIe devices.

The expansion card uses a 4-layer circuit board, which has strong anti-interference ability and effectively ensures the stability of PCIe high-speed signal transmission, data integrity, and impedance matching. In order to enhance operational stability, the chip is also equipped with an aluminum alloy heat sink to provide better heat dissipation.

Board Overview of M.2 M Key to PCIex4 Expansion Board

Board Overview of M.2 M Key to PCIex4 Expansion Board

Note: All 4 ports are PCIex1, transmitting PCIe signals, not USB data! It must be used with a PCIex1 to PCIex16 adapter card to connect an external PCIe device.

Wiring Diagram of M.2 M Key to PCIex4 Expansion Board and LattePanda Sigma

Wiring Diagram of M.2 M Key to PCIex4 Expansion Board and LattePanda Sigma


  • 4 PCIe interfaces
  • With heat sink, performance is more stable
  • Compatible with multiple systems
  • Specification:

  • Number of extensions: PCIex1-4
  • Working temperature: 0°C~55°C
  • Storage temperature: -20°C~65°C
  • Compatible systems: Windows/Linux/Mac os
  • Size: 22*80mm
  • Documents:

  • Product wiki
  • Product Includes:

  • M.2 M Key to PCIex4 Expansion Board x1
  • Shipping rates Australia wide and New Zealand

    Please add the items in cart and proceed to checkout to calculate shipping cost. We have range of shipping options once goods are ready to dispatch. 
    1. Regular shipping: Goods will be shipped using Australia post regular shipping service. 
    2. Express shipping: Goods will be shipped using Australia post EXPRESS shipping service. 
    3. Express split shipping: Local stock from Melbourne will be shipped ASAP (1 business day) using EXPRESS shipment while remaining items from overseas stock when arrived in Melbourne shipped using second EXPRESS shipment. 
    4. Pick up from Thomastown, Melbourne is available on appointment between 9 am to 3 pm during business days. 



    • How do I estimate shipping for my order?
      • Add products in the shopping cart and head to the checkout page to estimate the shipping.

    Dispatch time

    Unless expressly agreed otherwise with you, we will not commence delivery of an order until we have received cleared payment of the purchase price in full.

    All orders placed before 11 am AEST (Monday to Friday) will ordinarily be processed on the same day.

    We will endeavour to ship the Products by the applicable time indicated on the website, but all times are indicative only.  All shipping times are dispatch times only, and actual delivery dates will depend on the shipping method chosen, delivery address and delivery service provider. 

    Note- Please make a note during purchase if you require any item urgently. However we cannot guarantee that we will be able to comply with any request

    *Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Thomastown, 3074 as the "from" address - https://auspost.com.au/parcels-mail/delivery-times.html?ilink=tools-open-deliv-times.

    Shipping Destinations

    We ship all products throughout mainland Australia, Tasmania and New Zealand - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional areas but do not deliver to areas in Australia where the Australia Post delivery network is not available. 

    Check Express shipping delivery coverage area at - http://auspost.com.au/parcels-mail/delivery-areas.html

    Receipt of deliveries

    Deliveries to post office boxes are not permitted where delivery is by courier. If delivery is by courier and nobody is available at the delivery address to accept delivery when delivery is attempted then the courier may either:

    • leave the relevant parcel at the unattended address (the courier will do so if specified in your delivery requirements); or
    • re-attempt delivery at a later time or date, in which case we may charge you an additional re-delivery fee. 

    Note that if a delivery is left unattended at the shipping address and is subsequently stolen then the theft is your responsibility, not ours.

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