Mini Base Board for Raspberry Pi Compute Module 4 Lite/EMMC Series Module, with CM4 Socket, Raspberry Pi 40PIN GPIO Header, and Multiple Connectors, for Evaluating CM4 or Integrated into End Product

Brand: Waveshare Sold By: TopSelected
$139.38 In Stock
Ships from United Kingdom Arrives in 10-15 business days

Free Standard Shipping on orders over 89

30-day returns in original condition. Food, medicine & supplements are non-returnable.
Delivery:
10
August2026
-
17
August2026
delivery Delivery Guarantee arrow
check$5 Credit If Delayed
checkFull Refund If Item Is Damaged
check15-Day Full Refund If No Updates
check30-Day Full Refund If Not Delivered
Mini Base Board for Raspberry Pi Compute Module 4 Lite/EMMC Series Module, with CM4 Socket, Raspberry Pi 40PIN GPIO Header, and Multiple Connectors, for Evaluating CM4 or Integrated into End Product

Mini Base Board for Raspberry Pi Compute Module...

$139.38

Product Details
  • Mini base board designed for Raspberry Pi Compute Module 4, suitable for evaluating the Raspberry Pi CM4 or being integrated into end products.
  • Standard Raspberry Pi CM4 socket and color-codedRaspberry Pi 40 pin gpio header, suitable for Compute Module 4 Lite/EMMC series module.
  • Onboard multiple connectors including: CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot. The DSI display interface is the DSI0 interface, and the DSI1 display interface is not connected.
  • FAN fans only support 5V fans, 12V is not supported, confirm the fan voltage before connecting.Outline Dimensions: 85x56mm.
  • Comes with mounting screw, easy to install. When using the M.2 interface, please use the matching screws.

  • Color: CM4-IO-BASE-B
  • Manufacturer: Waveshare
  • Package Quantity: 1

Introduction
CM4-IO-BASE-B is an IO board designed for Raspberry Pi Compute Module 4, it can be used with all versions of CM4, suitable for evaluating the Raspberry Pi CM4 or beingintegrated into end products.
Mini base board (85x56mm) for Raspberry Pi CM4 features PoE function, with standard CM4 socket and color-coded Raspberry Pi 40 Pin GPIO header, suitable for Compute Module 4 Lite/EMMC series module.

Precautions for Use
1. This model only supports a 5V fan and cannot work with the 12V fan. Please confirm the fan voltage before connecting.
2. The DSI Display Port is connecting the DSI0 interface of the CM4, and doesn't use the DSI1 display interface.
3. The Type C interface can be used for the power supply or USB SLAVE interface for burning the image.
4. In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
5. It needs to use a 5V 2A power supply for CM4. Otherwise, problems such as automatic shutdown, frequency reduction, etc. may occur.
6. When using the M.2 interface, please use the matching screws. Using screws of other lengths may cause the CM4 core to be damaged by the screws.
7. The module doesn't have any protection circuit, please do not short-circuit the power supply.
8. USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt.
9. HDMI1 uses a flat cable output, if you need to use it, you can purchase an HDMI adapter.
10. This expansion board does not support the POE function.

Development Resources
https://www.waveshare.com/wiki/CM4-IO-BASE-B?Amazon

Package Content
1. CM4-IO-BASE-Bx1
2. Mounting screw x1

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges first item USD 6.99 and additional item USD 3.0 each. Standard International Shipping from United Kingdom, Germany, Italian and Japan to the United States charges first item USD 11.99 and additional item USD 4.0 each.

Import Duty: Everymarket collects applicable duties and taxes on goods imported into the U.S. at checkout, it's calculated based on the goods value multiply by the rate. For United Kingdom and China goods is 10%, Germany, Italian and Japan goods is 15%. We are committed to making your U.S. shopping experience simple and transparent. The method of delivery—either Delivered Duty Paid (DDP) or Delivered Duty Unpaid (DDU)—depends on whether duties and taxes are collected at the time of your purchase.

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. Average transit times to the United States is 3 - 7 Business days and average transit times to International is 7 - 14 Business days 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs:
    - If your return is approved due to a defective, damaged, or incorrect item, we will provide a prepaid return shipping label at no cost.

    - If the item has no quality issues and matches the product listing and description, please contact our Customer Service team before returning it. Once your return is authorized, you must return the item according to the provided instructions. In this case, the return shipping cost is the customer's responsibility.

    - We are not responsible for return shipping costs for items returned without prior authorization.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Please contact us to get return labels.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 (800) 660-3783

  • Email: cs@everymarket.com

 

  • Mini base board designed for Raspberry Pi Compute Module 4, suitable for evaluating the Raspberry Pi CM4 or being integrated into end products.
  • Standard Raspberry Pi CM4 socket and color-codedRaspberry Pi 40 pin gpio header, suitable for Compute Module 4 Lite/EMMC series module.
  • Onboard multiple connectors including: CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot. The DSI display interface is the DSI0 interface, and the DSI1 display interface is not connected.
  • FAN fans only support 5V fans, 12V is not supported, confirm the fan voltage before connecting.Outline Dimensions: 85x56mm.
  • Comes with mounting screw, easy to install. When using the M.2 interface, please use the matching screws.

  • Color: CM4-IO-BASE-B
  • Manufacturer: Waveshare
  • Package Quantity: 1

Introduction
CM4-IO-BASE-B is an IO board designed for Raspberry Pi Compute Module 4, it can be used with all versions of CM4, suitable for evaluating the Raspberry Pi CM4 or beingintegrated into end products.
Mini base board (85x56mm) for Raspberry Pi CM4 features PoE function, with standard CM4 socket and color-coded Raspberry Pi 40 Pin GPIO header, suitable for Compute Module 4 Lite/EMMC series module.

Precautions for Use
1. This model only supports a 5V fan and cannot work with the 12V fan. Please confirm the fan voltage before connecting.
2. The DSI Display Port is connecting the DSI0 interface of the CM4, and doesn't use the DSI1 display interface.
3. The Type C interface can be used for the power supply or USB SLAVE interface for burning the image.
4. In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
5. It needs to use a 5V 2A power supply for CM4. Otherwise, problems such as automatic shutdown, frequency reduction, etc. may occur.
6. When using the M.2 interface, please use the matching screws. Using screws of other lengths may cause the CM4 core to be damaged by the screws.
7. The module doesn't have any protection circuit, please do not short-circuit the power supply.
8. USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt.
9. HDMI1 uses a flat cable output, if you need to use it, you can purchase an HDMI adapter.
10. This expansion board does not support the POE function.

Development Resources
https://www.waveshare.com/wiki/CM4-IO-BASE-B?Amazon

Package Content
1. CM4-IO-BASE-Bx1
2. Mounting screw x1

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges first item USD 6.99 and additional item USD 3.0 each. Standard International Shipping from United Kingdom, Germany, Italian and Japan to the United States charges first item USD 11.99 and additional item USD 4.0 each.

Import Duty: Everymarket collects applicable duties and taxes on goods imported into the U.S. at checkout, it's calculated based on the goods value multiply by the rate. For United Kingdom and China goods is 10%, Germany, Italian and Japan goods is 15%. We are committed to making your U.S. shopping experience simple and transparent. The method of delivery—either Delivered Duty Paid (DDP) or Delivered Duty Unpaid (DDU)—depends on whether duties and taxes are collected at the time of your purchase.

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. Average transit times to the United States is 3 - 7 Business days and average transit times to International is 7 - 14 Business days 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs:
    - If your return is approved due to a defective, damaged, or incorrect item, we will provide a prepaid return shipping label at no cost.

    - If the item has no quality issues and matches the product listing and description, please contact our Customer Service team before returning it. Once your return is authorized, you must return the item according to the provided instructions. In this case, the return shipping cost is the customer's responsibility.

    - We are not responsible for return shipping costs for items returned without prior authorization.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Please contact us to get return labels.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 (800) 660-3783

  • Email: cs@everymarket.com

 

Oops!

Sorry, it looks like some products are not available in selected quantity.

OK