This DB9 to RJ45 Adapter is used for modular RS232, RS422, and RS485 connections and is backed by StarTech.comfeets Lifetime Warranty.

Get advanced connectivity over multi-mode or single-mode fiber, by adding a 10GBase-LR/SR open SFP+ port to your server or workstation - 1-Port 10G Open SFP+ network card with Intel Chip - PCI Express 10GbE NIC w/ Open SFP+ for SR or LR transceivers

Peripheral, Std LP 2-port 40G QSFP+, Intel XL710 (Retail Pack), Standard LP 40GbE with 2 QSFP ports, Intel XL710