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Green PCB expansion card with silver USB-C port and two metal brackets

SMUGDESK

SMUGDESK PH66 PCIe 3.0 X4 to USB-C Expansion Card 20Gbps Dual Bracket SATA Power

SKU CH-H3TW-Z434Z

Adds one 20Gbps USB-C port via PCIe 3.0 x4 with dual brackets and SATA auxiliary power for stable high-speed transfers

  • Adds 20Gbps USB-C port via PCIe 3.0 x4 slot
  • ASMedia ASM3242 chip delivers real 1750MB/s sequential speed
  • SATA 15-pin auxiliary power prevents throttling under heavy load
  • Includes 120mm full-height and 80mm low-profile brackets
  • Works with Windows 10/11, Linux, macOS and older USB devices

PH66 PCIe 3.0 X4 USB-C Card

The SMUGDESK PH66 adds a single 20Gbps USB3.2 Gen2×2 Type-C port to any desktop with a free PCIe 3.0 x4 slot. It targets video creators and PC builders who need fast external NVMe SSD or 8K raw file transfers without replacing their motherboard.

Full and low-profile brackets included

Both a 120mm full-height and an 80mm low-profile bracket ship in the box for standard or slim chassis. Installation is plug-and-play on Windows 10, 11, Linux and macOS; the optional SATA 15-pin auxiliary power connector prevents speed drops during sustained heavy loads.

Check slot width and power cable

Verify the motherboard has an open x4, x8 or x16 slot wired for at least x4 electrical lanes. Ensure the power supply has a spare SATA 15-pin lead if you plan to use the auxiliary power port for continuous high-throughput work.

How it compares

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

Price $20.99
Pricier than about 73% of the 1,430 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the card is running at full 20Gbps after installation?

Connect an external NVMe SSD and run a sequential read test; speeds near 1750MB/s confirm the ASMedia ASM3242 chip is delivering full USB3.2 Gen2x2 bandwidth.

What brackets and cables come with the PH66, and what must I supply?

The box includes both a 120mm full-height bracket and an 80mm low-profile bracket; you must provide a SATA 15PIN power cable from your PSU if you want auxiliary power for sustained high-load transfers.

Which version of the card should I choose for a compact ITX build?

Use the included 80mm low-profile bracket to fit the single-slot PH66 into an ITX chassis while keeping the 20Gbps Type-C port accessible.

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