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Green PCIe bifurcation card with four horizontal x4 slots at 20mm spacing, gold edge connector, two SATA power headers

HOOCCC

HOOCCC PCIe 3.0 x16 to 4 x4 Bifurcation Expansion Card 20mm SATA Power

SKU CH-NY0V-QT6C7

Splits one PCIe 3.0 x16 slot into four x4 channels for NVMe SSDs or add-in cards with 20 mm spacing and SATA auxiliary power

  • External USB portsPCI Express
  • External connectors4 x Serial Ports
  • Internal portsPCI Express
  • Product typePCI Express to PCI Card
  • Splits one x16 slot into four independent x4 channels with BIOS bifurcation support
  • 20mm spacing improves airflow and prevents overheating for multiple low-profile devices
  • Two SATA 15-pin inputs share up to 75W for stable multi-device operation
  • Gold-plated x16 fingers and Foxconn connectors ensure reliable signal transmission
  • Verified PCIe 3.0 speeds reach ~3,570 MB/s read and ~2,685 MB/s write per channel

PCIe 3.0 Bifurcation Card

This add-on card splits a single PCIe 3.0 x16 slot into four independent x4 channels. It requires motherboard BIOS support for x4x4x4x4 bifurcation mode. The board uses gold-plated contacts and Foxconn connectors for signal stability. It targets workstation and AI builds needing dense PCIe device expansion.

Suits Multi-Device Builds, Not Single-Card Upgrades

Builders installing multiple NVMe SSDs, single-slot GPUs, or network cards benefit from the 20mm spacing that aids airflow. The design supports up to four low-power devices simultaneously. Buyers whose motherboards lack bifurcation support cannot use this card. Systems needing x8 or x16 electrical links per device should look elsewhere.

Four x4 Channels With 75W Shared Power Budget

Each channel delivers PCIe 3.0 x4 bandwidth, verified at roughly 3570 MB/s read and 2685 MB/s write with Samsung PM9A1 SSDs. The board draws auxiliary power through two SATA 15-pin inputs, each rated for about 36W. The four slots share a maximum of 75W total. One low-power card may run on bus power alone, but 12 SATA connections are recommended for two or more devices.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $33.99
Pricier than about 55% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameHOOCCC
Product lineAdapter Card
Product typePCI Express to PCI Card
Ports & slots
External USB portsPCI Express
External connectors4 x Serial Ports
Internal portsPCI Express

Questions about this item

My motherboard only has one x16 slot; what BIOS setting must it support so the HOOCCC card can split that slot into four x4 links?

The motherboard BIOS must allow the x16 slot to be configured in x4x4x4x4 bifurcation mode; without that setting the card will not present four independent x4 channels.

I plan to keep my older PCIe 2.0 NVMe SSDs; will they work at their rated speed when installed behind this bifurcation card?

Older PCIe 2.0 drives will function but are limited to their native 2.0 transfer rates; the card itself passes PCIe 3.0 x4 bandwidth to each port.

After installing the card and drives, how can I verify that each of the four ports is actually running at PCIe 3.0 x4?

In the OS device manager or with lspci, confirm every port reports a x4 link width and 3.0 speed, and run a benchmark such as CrystalDiskMark to see sequential reads near 3570 MB/s and writes near 2685 MB/s on each drive.

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