| PartNumber | CP2-HC055-E1-FJ | CP2-HC055-A1-FJ | CP2-HC055-A1-KR |
| Description | Hard Metric Connectors COMPAK PCI - STD SIG | Hard Metric Connectors 55P PRESS-FIT HEADR | Hard Metric Connectors 55P PRESS-FIT HEADR |
| Manufacturer | 3M | 3M | 3M |
| Product Category | Hard Metric Connectors | Hard Metric Connectors | Hard Metric Connectors |
| Number of Positions | 55 Position | 55 Position | 55 Position |
| Mounting Style | PCB | Press Fit | Press Fit |
| Termination Style | Press In | - | - |
| Mounting Angle | Straight | Vertical | Vertical |
| Contact Plating | Gold | Gold | Gold |
| Series | CP2 | CP2 | CP2 |
| Housing Material | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) |
| Brand | 3M Electronic Solutions Division | 3M Electronic Solutions Division | 3M Electronic Solutions Division |
| Contact Material | Copper Alloy | Copper Alloy | Copper Alloy |
| Product Type | Hard Metric Connectors | Hard Metric Connectors | Hard Metric Connectors |
| Factory Pack Quantity | 960 | 810 | 480 |
| Subcategory | Backplane Connectors | Backplane Connectors | Backplane Connectors |
| Part # Aliases | 51119905458 80001202896 | 51119905441 80001202888 | 51119905847 80001203282 |
| Unit Weight | - | - | 0.167888 oz |