Zebra 403520G-091P Thermal Barcode Printer Motherboard Rev A 403521G-001A

Zebra 403520G-091P Thermal Barcode Printer Motherboard Rev A 403521G-001A

This is an OEM Zebra thermal barcode printer motherboard, part number 403520G-091P, also identified by its PCB designation MADCAPP MLB (403521G-001A). It is the main logic board that controls the core functions of the compatible Zebra thermal printer, handling print processing, interface communication, and power management. The board carries a USB Type-B interface port, an onboard power switch and DC barrel jack, and multiple ribbon/FPC connectors for head, motor, and sensor connections.

Specifications & What's Included

• Manufacturer: Zebra Technologies
• Part Number: 403520G-091P
• PCB / Board Designation: MADCAPP MLB 403521G-001A
• Revision: Rev A
• Country of Manufacture: Mexico
• Interface: USB Type-B (onboard connector)
• Onboard power button and DC barrel jack (right edge)
• Multiple white FPC/ribbon cable connectors for printer sub-assemblies
• Large QFP main processor IC (center of board)
• Secondary QFP controller chip and supporting ICs
• Row of electrolytic capacitors for power regulation
• RTC (real-time clock) circuit area visible on board
• QA tested: ICT PASS and FCI PASS stickers confirmed on label
• Board only — no cables, enclosure, or mounting hardware included

Applications

Zebra is one of the leading manufacturers of thermal barcode label printers used in warehousing, retail, logistics, manufacturing, and healthcare environments. This logic board is a replacement or spare part for the compatible Zebra thermal printer model line, making it useful for field technicians, repair shops, and facilities that maintain Zebra printer fleets in-house. Sourcing OEM printer logic boards is a common approach for extending the service life of thermal printers rather than replacing an entire unit due to a single board failure. The USB Type-B interface is standard on Zebra desktop and light-industrial thermal printers from the mid-2000s onward.