Network adapter InLine 33382I — Gigabit Ethernet, USB-C 3-in-1 (Ethernet, Audio, PD)

The InLine 33382I is a compact USB-C 3‑in‑1 network adapter that converts a single USB-C port into a wired Gigabit Ethernet interface while adding a 3.5 mm TRRS audio jack and USB-C Power Delivery pass-through. The adapter provides stable 10/100/1000 Mbps wired networking, combined headset audio/microphone support and up to 100 W charging through Power Delivery 3.0, all in a lightweight housing with an integrated 15 cm host cable. It is designed for use with laptops, tablets, smartphones and other compatible devices with a USB-C port and is recognised by common operating systems without additional driver installation.

Advantages

The InLine 33382I merges three frequently required functions—Gigabit Ethernet, headset audio/microphone and PD charging—into a single small adapter, reducing the need to carry multiple dongles. Its RJ45 port supports full 10/100/1000 Mbps speeds for stable wired connections, the 3.5 mm TRRS jack handles combined audio output and voice input, and the USB-C Power Delivery 3.0 socket allows pass-through charging up to 100 W so the host device can remain powered while network and audio are in use. The adapter is plug-and-play on macOS, Windows, Linux and Android, enabling quick setup without driver installation.

Suitable for

• Users who need reliable wired network access for file transfers, video conferencing or streaming
• Laptops, tablets and smartphones with a USB-C port that lack a dedicated Ethernet port
• Mobile workers and travellers who want a single compact accessory for Ethernet, headset audio and charging
• Environments where wireless networks are unstable or restricted and a wired connection is required

When it may not be suitable

It is not suitable for devices that do not provide USB-C host functionality or lack USB-C ports. The adapter is intended for dry indoor use and is not designed for outdoor or wet environments. Very old operating systems or uncommon hardware configurations may require additional drivers despite general plug-and-play support.

Key specifications

• Network interface: RJ45 supporting 10/100/1000 Mbps
• Audio: 3.5 mm TRRS jack (combined headphone output and microphone input)
• Power Delivery: USB-C PD 3.0 pass-through, up to 100 W (20 V / 5 A)
• Host connection: USB-C plug with approx. 15 cm cable
• Host socket: USB-C socket for PD input while using other functions
• Supported operating systems: macOS / iOS / iPadOS, Windows 7/8/10/11, Linux, Android
• Intended use: indoor dry environments
• Package weight: 51 g

How to use

Connect the adapter's USB-C plug to a compatible USB-C host port. If charging is required while using the adapter, connect a USB-C power adapter to the onboard USB-C socket; Power Delivery will pass through to the host device with up to 100 W, while the RJ45 and 3.5 mm audio jack remain available. Plug an Ethernet cable into the RJ45 port for a wired network connection and insert a TRRS headset into the 3.5 mm jack for audio output and microphone input. The adapter is generally detected automatically by supported operating systems and is ready to use without additional driver installation.

What to consider before purchase

• Verify that your device has a USB-C port with host (OTG) capability and supports USB-C accessories
• Ensure your workflows require simultaneous use of Ethernet, audio and charging via a single port
• Confirm required charging power—Power Delivery pass-through supports up to 100 W (20 V / 5 A)
• Plan for indoor use only; the adapter is not rated for outdoor or wet environments

Usage recommendations

For reliable performance, use a quality Cat5e or Cat6 Ethernet cable for Gigabit speeds, a TRRS-compatible headset for combined audio and microphone functions, and a USB-C PD charger rated to the necessary wattage if you require device charging while connected.