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| PartNumber | 5558178-1 | 55581 | 5558188-1 |
| Description | Modular Connectors / Ethernet Connectors 1X1 8/8 R/A SMT | Modular Connectors / Ethernet Connectors MOD JK ASSY 4P 8POS R/A SHLD | |
| Manufacturer | TE Connectivity | - | - |
| Product Category | Modular Connectors / Ethernet Connectors | - | - |
| RoHS | Y | - | - |
| USOC Codes | RJ45 | - | - |
| Number of Positions | 8 Position | - | - |
| Number of Ports | 1 Port | - | - |
| Performance Category | Cat 3 | - | - |
| Mounting Angle | Right Angle | - | - |
| Termination Style | SMD/SMT | - | - |
| Shielding | Shielded | - | - |
| Color | Black | - | - |
| Packaging | Tray | - | - |
| Contact Plating | Gold | - | - |
| Housing Material | Nylon | - | - |
| Brand | TE Connectivity / AMP | - | - |
| Contact Material | Phosphor Bronze | - | - |
| Flammability Rating | UL 94 V-0 | - | - |
| Product Type | Modular Connectors / Ethernet Connectors | - | - |
| Factory Pack Quantity | 136 | - | - |
| Subcategory | Modular Connectors / Ethernet Connectors | - | - |
| Part # Aliases | 5558178-1 | - | - |
| Unit Weight | 0.111995 oz | - | - |