Sitecom LN - network adapter overview and full product specs on CNET. Sitecom LN - network adapter. Part Number: LN ZIP. Total. Store. Promos. You can download and update all Sitecom Gigabit-Ethernet PCI Adapter LN drivers for free on this page. Choose a proper version according to your system. Sitecom Gigabit Ethernet Adapter LNv2 via Command Prompt. Step 3: Delete invalid entries of Sitecom Gigabit Ethernet Adapter LNv2 in the registry.