Authentic vintage General Electric (GE) IC3600 series circuit board, Part Number 4403-2A. Originally engineered in 1975, this driver / control module is a core hardware component utilized in legacy GE Speedtronic Mark I and Mark II analog turbine control systems for gas and steam power generation utility infrastructure. This item is being sold in used condition, showing entirely complete onboard components, original tracing architecture, and historical production stampings intact.$5 flat rate shipping regardless of how many items you purchase. Includes this listing and any of our other listings that say the same thing. Please do not pay on multiple purchases without requesting an invoice from your page so we can adjust shipping to $5 total.Product Specifications & Technical Features:

• Brand: General Electric (GE)
• Control System Series: Speedtronic Mark I / Mark II (MK1 & MK2) Analog Turbine Management
• Board Part Number: IC3600 4403-2A (Stamped 4403-2A)
• Production Era: Vintage 1975 Industrial Surplus
• Primary Functions: Handles discrete signal routing, analog driver controls, sequencing circuits, or protective shutdown thresholds within the main rack enclosure assembly
• Board Material: Heavy duty classic vintage fiberglass resin substrate layout
• Pin Architecture: Integrated heavy-gage male connector terminal prongs designed to secure directly into specialized industrial rack sockets
• System Applications: Originally implemented for power plant automation, major utility infrastructure, marine propulsion turbines, and large-scale industrial compressor controls

Item Condition Notes:
This circuit board is sold in used, uncertified industrial surplus condition. It was carefully pulled from a decommissioned legacy power generation system assembly or backup parts cabinet. The board shows typical cosmetic aging, minor surface dust, light oxidation on metal pins, and historical handling marks consistent with its 1975 production heritage. No active bench testing or component-level logic simulation has been performed. All onboard resistors, capacitors, and discrete electronics components remain completely intact and visually sound. Please closely evaluate all detailed photographs to confirm physical condition, board traces, and stamping marks prior to purchase.Feel free to contact us with any questions.

Please look at pictures carefully, what you see is what you will get.