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Green PCB add-on card with two PCIe x16 slots and gold fingers

HOOCCC

HOOCCC P2A PCIe 4.0 x16 to Dual x8 Split Card

SKU CH-CWSH-KMFT0

Splits one PCIe 4.0 x16 slot into two x8 ports with a built-in clock chip for dual GPUs or NVMe cards

  • External USB portsPCI Express
  • Internal USB ports1 x PCI Express
  • External connectors2 x Pcie x16
  • Internal ports2 x Pcie x16
  • Supported standards1394A
  • Product typePCI Express Controller Card

Power supply P2A-Sata

  • One x16 slot becomes two x8 links at PCIe 4.0 x8 speed
  • Built-in clock chip gives stable timing without motherboard bifurcation support
  • 6-layer PCB with 5 µm gold fingers for reliable conductivity
  • SATA or 4-pin auxiliary power keeps heavy GPUs stable
  • Low-profile 41 mm clearance fits dual cards in tight chassis

PCIe 4.0 x16 bifurcation card

The HOOCCC P2A splits one PCIe 4.0 x16 slot into two independent x8 links, each running at full Gen4 speed. It targets enthusiasts, workstation builders and server integrators who need dual GPUs, NVMe add-in cards or other high-throughput devices from a single host slot. The integrated clock bifurcation chip handles reference clock distribution for stable operation across both ports. A power indicator LED confirms auxiliary power is present.

Thermals noise and power

The card draws auxiliary power through either a SATA or CPU 4-pin connector, with the 4-pin version including a large 4D-to-4-pin cable for flexible routing. Extra power ensures stable operation under heavy GPU or PCIe device loads without overloading the motherboard slot. The 6-layer PCB construction minimises impedance and heat buildup during sustained high-bandwidth transfers. No active cooling is fitted, so airflow in the chassis manages component temperatures.

Build quality and connectors

A high-density 6-layer board with 5 µm gold-plated fingers provides corrosion resistance and reliable contact over repeated insertions. Two physical x16 sockets are spaced 20 mm apart with 41 mm slot clearance, allowing dual full-profile cards in tight chassis. Next-generation LOTES Gen4 connectors secure each device for consistent high-speed seating. The card requires motherboard support for PCIe bifurcation; systems without that feature cannot split the x16 link into two x8 channels.

How it compares

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

Price $42.99
Pricier than about 65% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameHOOCCC
Product typePCI Express Controller Card
Connectivity
Supported standards1394A
Ports & slots
External USB portsPCI Express
Internal USB ports1 x PCI Express
External connectors2 x Pcie x16
Internal ports2 x Pcie x16

Questions about this item

How do I install the HOOCCC P2A split card and what step is often missed?

Insert the card into a PCIe 4.0 x16 slot, attach either SATA or 4-Pin auxiliary power, then seat two full-profile cards in the 20mm spaced x16 sockets; the step often missed is connecting auxiliary power before booting, which the onboard LED confirms.

What maintenance or replacement will the HOOCCC P2A need later?

The 5µm gold-plated fingers and 6-layer PCB are rated for long-term durability; no scheduled maintenance is required, but if a downstream device fails you would replace that device, not the split card itself.

What limit appears first under sustained load on the HOOCCC P2A?

Each downstream port is electrically x8 at PCIe 4.0, so the first limit is the x8 bandwidth ceiling per channel; the integrated clock chip and auxiliary power input are designed to keep signal integrity stable up to that limit.

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