Products for bench top machinists | LittleMachineShop.com

USB Interface Board, 3501 & 3503 CLEARANCE

USB Interface Board, 3501 & 3503 CLEARANCE - Main image
$279.97 $399.95 In stock

This USB Interface Board is a replacement breakout board designed for use with the 3501 and 3503 CNC milling machines, including the Grizzly G0951 CNC Mill and the SIEG KX3 CNC Mill. It provides a USB connection interface for controlling your mill from a computer.

  • Compatible with 3501 and 3503 CNC milling machines.
  • Fits Grizzly G0951 CNC Mill and SIEG KX3 CNC Mill.
  • Enables USB connectivity for machine control.
  • Manufactured by Sieg Industrial Group.
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Abigail Y. ★★★★★

Took a chance on this since my mill's controller died mid-job, but the board plugged right in and the USB handshake was instant with my existing setup. Fit the G0951's mounting holes without any filing, which surprised me. Working flawlessly after a month of daily cuts.

Thomas N. ★★★★★

I was halfway through replacing the fried board on my SIEG KX3 when I realized the pin layout matches the original exactly, so no re-wiring headaches. The board feels solid and seated right into the existing connector, and my mill's back online with zero fuss.

Madison E. ★★★★★

Finally got my old G0951 communicating again after swapping in this board — the breakout pins line up perfectly with the factory wiring harness. The build quality feels solid, and plugging in the USB was instantly recognized by my computer.