We no longer carry Dell - network adapter (3977707), but we found this replacement for you.
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Add an Ethernet port through the USB-C input on your computer with the Dell USB-C to Ethernet Adapter. This Dell adapter connects to an existing USB-C port on your device and offers an Ethernet port for network expansion. Use it to establish a new connection, connect to another network or expand your device's bandwidth without requiring a switch or router. The adapter supports up to Gigabit Ethernet data speeds for fast streaming of online content.