Adapter Specs Type: Blade Network Daughter Card (bNDC) Ports: 4 x 10GbE (internal backplane) Plug Type: (internal) Max Data Rate: 10Gbps Protocols: Ethernet Part Number: JNK9N The Dell Broadcom 57840S (JNK9N) is a quad-port 10GbE blade Network Daughter Card designed exclusively for Dell PowerEdge blade servers. As an internal component, it connects directly to the server backplane and interfaces with chassis-integrated switches or pass-through modules. Its SFP+ connectivity enables high-speed internal network links without using external PCIe slots. This adapter is ideal for dense server environments such as Dell M620, M630, M830, FC630, and FC830. It provides high-throughput internal networking for virtualization, storage access, and clustered computing—while enabling load balancing, VLAN tagging, and failover through server-side configuration.