UGREEN USB 3.0 Type-A Female-to-Female Coupler (20119)

Overview

The UGREEN 20119 is a passive coupler with two USB-A sockets. It joins two USB-A cables end to end to extend a USB 3.0 connection, for example to reach a drive, card reader or keyboard that sits a little too far from the computer. It passes data at up to 5 Gbps and needs no driver.

Is it right for you?

• Suits a planned extension where one computer or host feeds one accessory through two USB-A male-ended cables.
• Suits flash drives, card readers, keyboards, mice and similar accessories within the host’s data and power limits, including a TV playing media from a drive when the TV is the only host.
• Never use it to join two computers, two chargers, two power banks or any two powered devices. That can create an unsafe backfeed and damage ports.
• A one-piece extension cable of the right length is often the safer and more reliable choice.

Key features

• USB 3.0 signalling up to 5 Gbps when every part of the chain is SuperSpeed-capable.
• Backward compatible with USB 2.0 and USB 1.1 at the common rate.
• Aluminium alloy case with an internal metal shield and gold-coloured contacts.
• Passive plug-and-play path, no driver.

What else you need

The two USB-A male-ended cables you want to join, with exactly one host or power source in the whole chain.

Before you buy

• It gives no electrical isolation or backfeed protection and does not identify which end is the source.
• It is not a hub, switch, repeater, data blocker or charging controller, and it does not boost current, voltage or speed.
• Added contacts and cable length reduce signal and voltage margin, so 5 Gbps is conditional, not guaranteed, and bus-powered drives may need a powered hub.
• Heavy plugs or taut cables can lever on the small adapter and the equipment port.
• If you are unsure of the cable roles, do not connect it; choose a purpose-built cable or check the equipment documentation.