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Black PCI-E x4 expansion card with two Type-C ports and a SATA power connector

AAA

AAA PCI-E x4 to Dual Type-C Adapter Card 10Gbps

SKU CH-AHAJ-1J3WQ

Adds two USB 3.1 Type-C ports via PCI-E x4 with ASMedia ASM3142 controller delivering 10Gbps bandwidth and 15-pin SATA power

  • Product type1 card
  • Adds two USB 3.1 Type‑C ports at 10Gbps via PCI‑E x4
  • Hot‑plug support lets you connect devices without shutting down
  • ASMedia ASM3142 controller delivers stable high‑speed data transfer
  • 15‑pin SATA power connector supplies reliable power to attached devices
  • Four‑layer PCB with solid‑state capacitors reduces interference for consistent performance

PCI-E x4 to Dual Type-C Adapter

This PCI-E x4 expansion card adds two USB 3.1 Type-C ports to a desktop system using the ASMedia ASM3142 controller. It suits builders who need fast external connectivity for storage or peripherals without replacing the motherboard. The card draws supplementary power from a 15-pin SATA connector to maintain stable operation under load.

Bandwidth and OS limits

The interface delivers up to 10 Gbps shared across both ports, so simultaneous high-speed transfers will divide the available throughput. Hot-plug support allows devices to be connected or disconnected without a system restart. Supported operating systems include Windows 7, 8, 10 in both 32-bit and 64-bit versions, plus Mac and Linux.

Upgrade from single-port or onboard USB

The card replaces a single Type-C port or older USB headers that cannot reach 10 Gbps, adding a second high-speed port and dedicated power delivery. The jump is worthwhile when you regularly move large files to external SSDs or need two Type-C devices powered at full speed. It does not help if your workflow only uses legacy USB-A connectors or requires internal drive bays.

How it compares

Measured against everything we stock in USB & Internal Card Readers, at today’s prices. Recalculated every night.

Price $25.99
Pricier than about 66% of the 511 comparable items (median $18.99).

Specifications

Product
Product type1 card

Questions about this item

How do I decide whether this PCI-E x4 to dual Type-C adapter is the right version for my build?

Choose it if you have a free PCI-E x4 slot, need two Type-C ports running at 10Gbps, and can supply power through a 15Pin SATA connector; the card measures 12 by 8 by 1.85 cm and weighs about 61 g.

What does the 10Gbps bandwidth actually deliver inside a working PC?

The ASMedia ASM3142 controller provides up to 10Gbps shared across both Type-C ports, so each connected device can transfer at USB 3.1 Gen 2 speed when the host slot and cable also support that rate.

Which interface standard does the card use and what limits it in practice?

It plugs into a PCI-E x4 slot and presents two Type-C ports; the 10Gbps ceiling is set by the ASM3142 chip, so total throughput cannot exceed that figure regardless of how many drives are attached.

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