How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

What payment methods does MRO Exchange accept?

MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Giddings & Lewis Electronics Processor Module 501-03865-01

$149.00 USD

Sale Sold out

ConditionSurplus - Untested MPN501-03865 Stock #0226-00418-2

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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This Giddings and Lewis Processor Module, part number 501-03865-01 with secondary assembly number 502-03061-51, is a vintage CNC control board designed for use in Giddings and Lewis MPX series machine control systems. The board is silkscreened "PROCESSOR MODULE" and carries the primary assembly designation 501-03865-01 prominently on the component side.

The board features a multi-layer green PCB construction with gold-edge connector fingers on two sides, indicating a card-edge bus interface typical of rack-mounted industrial control architectures. Visible ICs include TTL logic devices, an 8284 clock generator, an 8288 bus controller, MC2661 and MC68661 serial communications controllers, AM26LS30 and AM26LS32 line drivers and receivers, and a CTS 10.000 MHz crystal oscillator. The silkscreen also identifies a serial port interface (CONN A), termination selection jumpers, and board test points.

This board is intended for technicians, machine rebuilders, or facilities maintaining Giddings and Lewis MPX series CNC equipment. It is sold as-is surplus. No testing, inspection, or functional verification has been performed or implied.

Stock # 0226-418-2

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.