We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green PCB add-in card with two blue USB 3.0 ports and a 20-pin internal header

Corn Electronics

Corn Electronics 2 Port USB 3.0 PCI Express Card 20 Pin Connector

SKU CH-MKXB-4DACR

Adds two USB 3.0 ports and a 19-pin internal header to a PCIe slot, with a 20-pin connector and built-in 4-pin power

  • TypeMini PCI Express to USB Card
  • External USB Ports2-port USB 3.0
  • External Ports2 port USB 3.0
  • Adds two USB 3.0 ports via a single PCI Express slot
  • High-speed transfers up to 5 Gbps for faster file moves
  • Fits x1, x2, x4, x8 and x16 lanes for broad motherboard compatibility
  • Includes 4-pin power and a 19-pin header to expand two more ports
  • Solid capacitors and double-shielded inductors protect signal integrity

Add two USB 3.0 ports via PCI Express

The Corn Electronics 2 Port USB 3.0 PCI Express Card adds two external USB 3.0 ports to a desktop system through a standard PCIe slot. It also provides a 19-pin internal header that can expand connectivity by two additional USB 3.0 ports. A 4-pin power connector and 20-pin interface support stable operation.

Suits builders adding front-panel

This card suits builders who need extra USB 3.0 ports for peripherals or front-panel headers on a desktop motherboard. It does not suit systems without an available PCI Express slot or users who require an internal 20-pin USB 3.0 header instead of the 19-pin connector provided.

PCI Express 2.0 Gen 1 interface

The adapter is designed to meet PCI Express 2.0 Gen 1 compliance and supports x1, x2, x4, x8 and x16 lane configurations. This single specification determines whether the card will function in the target motherboard slot.

Highlights

  • Adds two USB 3.0 ports via a single PCI Express slot
  • High-speed transfers up to 5 Gbps for faster file moves
  • Fits x1, x2, x4, x8 and x16 lanes for broad motherboard compatibility
  • Includes 4-pin power and a 19-pin header to expand two more ports
  • Solid capacitors and double-shielded inductors protect signal integrity

Specifications

TypeMini PCI Express to USB Card
External USB Ports2-port USB 3.0
External Ports2 port USB 3.0

Questions about this item

What connectors come on the card and what extra cable or header is needed to use the internal USB 3.0 19-pin connector?

The card provides two external USB 3.0 ports, a 20-pin Mini PCI Express interface and a USB 3.0 19-pin internal header; a compatible 19-pin to dual USB 3.0 bracket or cable must be purchased separately to expose the extra ports.

Which PCI Express slot widths are compatible with this x1 card?

The card works in x1, x2, x4, x8 or x16 slots because it uses a single-lane PCI Express 2.0 connection.

What real-world throughput can I expect from the 5 Gbps rating once the card is installed?

The 5 Gbps figure is the USB 3.0 bus ceiling; actual file-transfer speeds are lower due to protocol overhead, cable quality and the performance of the attached storage device.

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.