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V21 of 1st February 2023 - Product Change Notification
| Product Component | M4i.22xx Analog Module |
| Related products | M4i.22xx series M4x.22xx series DN2.22x series DN6.22x series |
| New Version Code | V21 |
| Related PCB version | V1.7 |
| Estimated Start of Shipment | Q3 2023 |
| Description of Change | Input protection diodes added Smalle changed in footprints and positions |
| Reason for Change | Improvement of overvoltage protection Imporvement of production yield |
| Anticipated Impact | None |
| Identification of Product | Hardware and PCB version readable by Spectrum Control Center and by any user program. Versions printed on Spectrum type label on backside of card |
| Required Updates for Usage | None |