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Flat green circuit board with two blue USB 3.0 Type-A ports and a 20/19 pin header

Vszerda

Vszerda U3-056-XY dual USB 3.0 A female to 20/19 pin header adapter

SKU CH-TMAD-TDT31

Adds two front-panel USB 3.0 Type-A ports via a 20- or 19-pin motherboard header

  • Rated speedFlat Type
  • Connection typeUSB Type A
  • Connector detailsUSB Type A
  • Connector genderFlat Type
  • Apple compatibilityUSB Type A
  • Conductor typeCopper
  • Adds two USB 3.0 ports via a 20 or 19 pin motherboard header
  • Flat PCBA design fits tight internal spaces without blocking other components
  • Copper conductors maintain full USB 3.0 signal integrity for external devices
  • Simple internal header to external Type A female conversion for front-panel upgrades
  • Brand new adapter ready for immediate installation in compatible desktop systems

Dual USB 3.0 A female adapter

This Vszerda adapter converts an internal motherboard 20 or 19 pin USB 3.0 header into two external USB Type A female ports. It uses a flat type PC board assembly with copper conductors for the connection. The unit is designed for PC builders who need front panel or bracket mounted USB 3.0 ports.

Thermals noise and power

The adapter is a passive component with no active cooling, fan or power circuitry of its own. It draws no separate power and adds no audible noise to the system. Thermal output is negligible because the board only routes the existing motherboard header signals to the external ports.

Sustained load behaviour

Under continuous USB 3.0 data transfer the flat PCBA simply maintains the electrical path between the header and the two Type A sockets. Performance is limited by the motherboard header implementation and the attached devices rather than by the adapter itself. No throttling or degradation occurs because there are no active components to overheat.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 80% of the 15,227 comparable items (median $14.99).

Specifications

Product
Brand nameXiwai
Model nameU3-056-XY
Product typeUSB Type A
Product colorMatte
Performance
Rated speedFlat Type
Ports & slots
Connection typeUSB Type A
Connector detailsUSB Type A
Connector genderFlat Type
Size & build
Conductor typeCopper
Build detailsCopper
Compatibility
Apple compatibilityUSB Type A

Condition and safety notices

Reproduced word for word from the maker or refurbisher: notices like these are not ours to rephrase.

Seller notice
Amzn specific no label with warning

Questions about this item

How do I fit the 20/19 pin header onto the motherboard and which way round does the keyed block go?

Align the missing pin on the 20/19 pin header with the blocked hole on the motherboard USB 3.0 header; the flat PCBA only seats one way, so press straight down until the plastic shroud sits flush.

Will the copper conductors or the USB 3.0 Type A ports wear out and need replacing?

The copper conductors are soldered to the flat PCBA and the Type A ports are surface mounted, so no user serviceable parts exist; the adapter is replaced as a whole if a port fails.

What limits transfer speed when I copy large files continuously through both ports?

The shared 20/19 pin header provides a single USB 3.0 channel, so sustained throughput is split between the two Type A ports and capped at the USB 3.0 signalling rate.

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