Dell Latitude 3520 IO Board USB Audio Ethernet | 203513-1

Dell Latitude 3520 (E3520) Power Button USB Audio Ethernet IO Board — Part # 203513-1 / CN-0MCCDH

Keep your Dell Latitude 3520 running at full capacity with this genuine replacement IO board. Part number 203513-1 (also referenced as CN-0MCCDH / 0MCCDH / MCCDH), this board integrates the power button, USB ports, audio jacks, and Ethernet connector into a single, compact assembly — making it the all-in-one solution for restoring full port and power functionality to your laptop.

Every unit in our inventory is 100% tested before shipment to ensure reliable performance right out of the box. Simply swap in the board following standard laptop disassembly procedures, and your Latitude 3520 is back in action.

Please note: In compliance with shipping safety regulations, BIOS batteries and other rechargeable cells are removed prior to dispatch. This is standard practice to ensure safe transit.

Key Features

• Compatible Model: Dell Latitude 3520 / E3520
• Part Numbers: 203513-1, CN-0MCCDH, 0MCCDH, MCCDH
• Integrated Functions: Power button, USB ports, audio jacks, Ethernet (RJ-45)
• Quality Assurance: 100% tested and verified before shipping
• Condition: Genuine Dell replacement part
• Ships Without Battery: BIOS battery removed for safe air transport

What's in the Box

• 1 × Dell Latitude 3520 IO Board (203513-1 / CN-0MCCDH)

Why Choose This IO Board?

A faulty IO board can render your laptop's USB ports, headphone jack, Ethernet port, or power button completely unresponsive. Rather than replacing the entire laptop, swapping this board is a cost-effective fix that restores all those functions instantly. With our tested-before-shipping guarantee, you can buy with confidence.

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: Which Dell laptop models is the 203513-1 IO Board compatible with?

A: This IO board (part number 203513-1, CN-0MCCDH) is specifically designed for the Dell Latitude 3520 and E3520 laptops. Always verify your laptop's part number before purchasing to ensure a correct fit.

Q: What functions does this Dell Latitude 3520 IO Board control?

A: This board integrates the power button, USB ports, audio output/input jacks, and the Ethernet (RJ-45) port. Replacing a damaged board restores all of these connectivity and control functions simultaneously.

Q: Why is the battery removed from this IO board before shipping?

A: To comply with international air-freight regulations for lithium and rechargeable batteries, BIOS batteries and other charged cells are removed before dispatch. This is a standard safety measure that ensures the product arrives safely and legally — it does not affect the board's performance once installed.

Q: Has this IO board been tested before shipping?

A: Yes. Every 203513-1 Dell Latitude 3520 IO Board is 100% tested prior to shipment to confirm full functionality across all integrated ports and the power button assembly.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.