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Compact circuit-board adapter with a 20-pin USB 3.0 socket and 20-pin USB 3.1 header

BUCIER

BUCIER NVME USB 3.0 20Pin to USB 3.1 Type-E Adapter

SKU CH-1GSS-191HB

Converts a motherboard NVME slot into a front-panel USB 3.1 Type-E header at 5 Gbit/s using a compact 20-pin adapter

  • Adds a USB 3.1 front-panel port via a USB 3.0 20-pin header
  • Converts an NVME M-key slot to USB 3.1 without extra cables
  • Plugs directly into the motherboard header for instant use
  • Delivers up to 5 Gbit/s through the Type-E socket
  • Uses a VL805 controller for reliable USB 3.1 operation

NVMe M-Key to USB 3.1 Type-E Adapter

This adapter converts an NVMe M-Key slot on a motherboard into a USB 3.1 20-pin front-panel header. It enables cases with USB Type-C or Type-A ports to run at USB 3.1 speeds even when the board lacks a native header. The VL805 controller handles the protocol translation. No extra cables or power connections are required.

Direct Header Installation

The compact PCB plugs straight into a USB 3.0 20-pin socket and presents a USB 3.1 20-pin header for the chassis front panel. Its low-profile design fits tight spaces without blocking adjacent headers. Builders can route the front-panel cable cleanly without adapters or extension ribbons. The connection is purely mechanical and draws power from the motherboard header.

5 Gbit/s Interface Limit

The link operates at up to 5 Gbit/s, matching the USB 3.1 Gen 1 specification. NVMe drives connected through this adapter will be bottlenecked to that bandwidth rather than their native PCIe speeds. The USB 2.0 pins on the header remain available for backward compatibility. Devices requiring higher throughput need a direct PCIe or USB 3.2 Gen 2 connection.

Highlights

  • Adds a USB 3.1 front-panel port via a USB 3.0 20-pin header
  • Converts an NVME M-key slot to USB 3.1 without extra cables
  • Plugs directly into the motherboard header for instant use
  • Delivers up to 5 Gbit/s through the Type-E socket
  • Uses a VL805 controller for reliable USB 3.1 operation

Specifications

Brandchenyang
ModelCY-EP-018

Questions about this item

What practical speed limit does the USB 3.1 Type-E header impose?

The adapter bundles USB 3.1 traffic at up to 5 Gbit/s, so the front-panel Type-E port is capped at that rate.

What motherboard header and clearance does this adapter need?

It plugs into any standard USB 3.0 20-pin header and requires no extra brackets or cables.

How is the adapter installed and what step is often missed?

Insert the compact converter directly into the USB 3.0 20-pin header; the common mistake is forgetting to connect the front-panel Type-E cable to the adapter's USB 3.1 20-pin header.

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