| gptkbp:instanceOf | gptkb:Ethernet_standard 
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                                | gptkbp:abbreviation | gptkb:400GbE 
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                                | gptkbp:alsoKnownAs | gptkb:400_Gigabit_Ethernet 
 | 
                        
                            
                                | gptkbp:application | cloud computing enterprise networking
 service provider networks
 
 | 
                        
                            
                                | gptkbp:compatibleWith | gptkb:IEEE_802.3bs gptkb:IEEE_802.3cd
 gptkb:IEEE_802.3ck
 
 | 
                        
                            
                                | gptkbp:dataRate | 400 Gbit/s 
 | 
                        
                            
                                | gptkbp:definedIn | gptkb:IEEE_802.3bs 
 | 
                        
                            
                                | gptkbp:enables | higher bandwidth applications network aggregation
 backbone upgrades
 
 | 
                        
                            
                                | gptkbp:introducedIn | 2017 
 | 
                        
                            
                                | gptkbp:marketAdoption | increasing since 2020 
 | 
                        
                            
                                | gptkbp:mediaType | copper fiber optic
 
 | 
                        
                            
                                | gptkbp:numberOfLanes | 4 lanes at 100 Gbit/s each 8 lanes at 50 Gbit/s each
 
 | 
                        
                            
                                | gptkbp:predecessor | gptkb:200G_Ethernet 
 | 
                        
                            
                                | gptkbp:range | up to 10 km (single-mode fiber) up to 100 m (multimode fiber)
 
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                                | gptkbp:relatedStandard | gptkb:200G_Ethernet gptkb:100G_Ethernet
 gptkb:800G_Ethernet
 gptkb:1_Terabit_Ethernet
 
 | 
                        
                            
                                | gptkbp:standardizedBy | gptkb:IEEE 
 | 
                        
                            
                                | gptkbp:successor | gptkb:800G_Ethernet 
 | 
                        
                            
                                | gptkbp:supports | gptkb:fiber copper cabling
 
 | 
                        
                            
                                | gptkbp:targetMarket | cloud service providers large enterprises
 telecom operators
 
 | 
                        
                            
                                | gptkbp:transceiverType | gptkb:COBO gptkb:OSFP
 gptkb:CFP8
 gptkb:QSFP-DD
 
 | 
                        
                            
                                | gptkbp:usedIn | data centers high-performance computing
 telecommunications
 
 | 
                        
                            
                                | gptkbp:uses | gptkb:NRZ_modulation gptkb:OSFP_transceivers
 gptkb:QSFP-DD_transceivers
 gptkb:CFP8_transceivers
 gptkb:COBO_transceivers
 PAM4 modulation
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Tofino_switch_ASIC gptkb:OSFP
 gptkb:100G_Ethernet
 gptkb:800G_Ethernet
 gptkb:Tomahawk_Ethernet_switch_chips
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | 400G Ethernet 
 |