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V4 of 12th March 2014 - Product Change Notification
| Product Component | M4i.xxxx PCIe base card |
| Related products | 22xx series 44xx series 66xx series 77xx series |
| New Version Code | V4 |
| Related PCB version | V1.1 |
| Estimated Start of Shipment | Q2 2014 |
| Description of Change | Rework of DC power section |
| Reason for Change | DC power for relais sometimes not working after star-up |
| 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 |