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Blue 50cm USB 3.0 cable with 20-pin motherboard header splitting to two USB-A ports on a PCI bracket

EN-Labs

EN-Labs 50cm USB 3.0 20-Pin to Dual USB-A with PCI Bracket

SKU CH-H3JX-S3JS0

A 50 cm cable converts a motherboard 20-pin header into two USB 3.0 Type-A ports and includes a PCI rear bracket for chassis mounting

  • Rated speed5 Gbit/s
  • Cable length1.64 ft (0.5m)
  • Connector count3
  • Product typeUSB 3.0
  • Product colorBlue
  • Overall length18 in (45.7 cm)
  • Add two USB 3.0 ports via a single 20-pin motherboard header
  • 50 cm cable length fits most chassis layouts
  • Rear PCI bracket secures ports to the case exterior
  • Supports 5 Gbps transfer speed for fast data access
  • Blue connectors identify USB 3.0 ports at a glance

USB 3.0 header adapter for PC builders

This EN-Labs cable converts a single motherboard 20-pin USB 3.0 header into two external Type-A ports. It suits system integrators and enthusiasts adding front-panel or rear-I/O connectivity to custom chassis. The 50 cm length fits standard ATX and micro-ATX layouts without excess slack. No driver installation is required on modern operating systems.

Passive design runs silent and cool

The adapter draws power directly from the motherboard header, adding negligible load to the 5 V rail. With no active components or fan, it produces zero audible noise and no measurable heat during sustained 5 Gbps transfers. The 18-inch blue cable uses standard gauge wiring rated for the USB 3.0 specification. Thermals remain identical to a native port.

PCI bracket secures both ports

A metal rear bracket is included so the two Type-A connectors can be mounted in a standard expansion-slot cutout. This provides strain relief and a clean, fixed position for frequent device swaps. The bracket uses standard screw spacing compatible with typical case rear panels. No additional screws or software utilities are supplied.

How it compares

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

Price $9.99
Cheaper than about 88% of the 15,227 comparable items (median $14.99).

Specifications

Product
Product typeUSB 3.0
Product colorBlue
Performance
Rated speed5 Gbit/s
Ports & slots
Connector count3
Size & build
Cable length1.64 ft (0.5m)
Overall length18 in (45.7 cm)

Questions about this item

How do I install the 20-pin header adapter cable with the PCI bracket?

Connect the 20-pin IDC header to the motherboard USB 3.0 connector, then secure the metal bracket to a rear expansion slot using a case screw. The 18 inch cable reaches most ATX boards.

What maintenance will the dual USB 3.0 Type A female ports need?

No scheduled maintenance is required. If a port becomes loose or damaged, the entire adapter cable must be replaced as the ports are not serviceable.

What limit appears first during sustained 5Gbps transfers?

The 50cm cable length and passive design mean signal integrity at 5Gbps is the first constraint under continuous high-throughput use.

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