RE: Headphones not working with Latitude E7450 and E-Port Plus Advanced Port Replicator
Thank you for writing to Dell Community Forum.
Please update the BIOS, chipset and audio drivers from the Dell Support site.
Can you check if there is sound from external speakers when connected to the system when docked.
Please click my DELL-username and send me a Private Message with the Dell Service Tag number and your email address.