Adapter PremiumCord USB-C and USB-A to Gigabit RJ45 + 3× USB 3.2 ports (10/100/1000 Mbps)

The Adapter PremiumCord USB-C and USB-A to Gigabit RJ45 + 3× USB 3.2 ports (10/100/1000 Mbps) is a compact multiport adapter that converts a host USB-C or USB-A port into a wired Gigabit Ethernet connection while adding three downstream USB 3.2 ports. It is intended for laptops, tablets and desktop computers that lack a built‑in RJ45 socket or need extra USB ports. The adapter supports 10/100/1000 Mbps network speeds and provides simultaneous connectivity for peripherals such as flash drives, keyboards, mice or other USB devices.

Advantages

This adapter combines a Gigabit RJ45 interface with three USB 3.2 ports in a small, portable housing, allowing stable wired network access and peripheral expansion through a single plug. Compatibility with both USB‑C and USB‑A host ports increases its versatility across different computers and operating systems. The three downstream USB 3.2 ports provide high-speed data transfer for external drives and accessories while the Gigabit Ethernet port offers lower latency and a reliable connection compared with Wi‑Fi in situations where a wired link is preferable.

Suitable for

• Users who need wired Gigabit Ethernet on ultrabooks, tablets or PCs without an RJ45 port
• Connecting external storage, keyboards, mice and other USB accessories while using a wired network
• Home offices, small office setups and meeting rooms requiring reliable network connectivity
• Travelers who want a compact adapter to expand connectivity on different devices

When it may not be suitable

This adapter is not a replacement for built‑in docking stations that offer power delivery or display outputs; it provides network and USB data connections only. It may not be suitable if you require USB power delivery to charge a laptop through the same connector or need multiple display interfaces. Also, maximum performance depends on the host device, its USB controller and connected cables; older USB ports may limit transfer speeds below the adapter's theoretical maximum.

Key specifications

• Network standard: Ethernet 10/100/1000 Mbps (Gigabit)
• Host interface: USB-C and USB-A compatible (plug adapter/cable included or integrated, depending on model)
• Downstream ports: 3 × USB 3.2 Type-A ports (high-speed data transfer)
• Form factor: compact, portable adapter housing
• Primary functions: wired LAN connectivity and USB peripheral expansion

How to use

Connect the adapter to a host USB‑C or USB‑A port on your computer, then plug an Ethernet cable into the RJ45 jack to establish a wired network connection. Attach USB devices to the three USB 3.2 Type‑A ports as needed. The operating system should detect the network and USB devices automatically; if necessary, install drivers provided by the system or manufacturer's website. For best network performance, use a quality Ethernet cable and ensure the host port supports USB 3.x speeds.

What to consider before purchase

• Check whether your device supports USB 3.x to achieve full Gigabit and USB 3.2 speeds
• Confirm whether you need power delivery or video output—this adapter does not provide charging or display ports
• Verify physical space and connector orientation on your laptop or tablet to ensure comfortable use of the adapter

Usage recommendations

Use a USB 3.0/3.1/3.2 host port and a Cat5e or higher Ethernet cable for optimal Gigabit performance; keep drivers updated and avoid connecting bandwidth‑heavy peripherals concurrently if you need maximum network throughput.