| PartNumber | 1903977-2 | 1903978-1 | 1903977-1 |
| Description | Power to the Board SLIM UPM 4POS. R/A HDR ASSEMBLY | Hard Metric Connectors 4P POWER MODULE REC. ASSY | Power to the Board SLIM UPM 4POS. R/A HDR ASSEMBLY |
| Manufacturer | TE Connectivity | TE Connectivity | - |
| Product Category | Power to the Board | Hard Metric Connectors | - |
| Product Type | Power to the Board | Hard Metric Connectors | - |
| Packaging | Tube | Tube | - |
| Brand | TE Connectivity | TE Connectivity | - |
| Factory Pack Quantity | 56 | 39 | - |
| Subcategory | Power Connectors | Backplane Connectors | - |
| RoHS | - | Y | - |
| Part # Aliases | - | 1903978-1 | - |