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 501-04309-01 Dual Servo SBX Board

$499.99 USD

Sale Sold out

✓ 30-day returns on every item — return policy

ConditionSurplus - Untested MPN501-04309-01 Stock #0226-00519

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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⚡ Same-day shipping available — order by 11 am CT ($100 add-on at checkout)

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The PCB assembly marked 501-04309-01 is a Dual Servo SBX board, revision 1, dated 3/88 per the silkscreen on the component side. A secondary PCB identifier, 502-03423-01, is also printed on the board and may represent an assembly or schematic reference number. The board is a full-length, multi-layer design populated with a dense array of through-hole integrated circuits including Harris CMOS logic, National Semiconductor HC-series logic, and a DAC811AH digital-to-analog converter. A DALE crystal oscillator marked XO-43B at 16.384 MHz is mounted on the component side, and a gold-lidded ceramic IC package is visible near the oscillator. The board features a card-edge connector on one end and a 40-pin ribbon cable connector populated with a blue IDC header. The designation "DUAL SERVO SBX" indicates the board is intended for dual-axis servo interface functions within a CNC or industrial automation control system. The assembly number 501-04309-01 is the primary market-recognized identifier for this board. Revision 1 is silkscreened directly on the PCB. The manufacturer is not identified by visible logo or marking on either side of the board.

Stock # 0326-519

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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.