PCI-E interface: 5MMIK thick gold plated?? reliable contact?? low loss. Can effectively reduce data loss and data delayHeat sink: Use large heat sink to reduce network card temperature?? improve work stability and extend service lifeHigh cost performance and stable performanceInterface: The external is made of fully shielded gold-plated interface?? and the internal contact is made of gold-plated 25mm flat needle. It can effectively reduce the contact resistance?? enhance the signal anti-interference?? and make the data transmissFour ports: can be aggregated into one port and can also be used as four cards