STARTECH PEXUSB3S25 2 Port PCI Express USB 3.0 Expansion Card
- 2x USB Ports
- USB 3.0
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POWINSUN
Six PCI-E 1x to 16x riser boards with 60 cm USB 3.0 cables, gold-plated contacts and four solid capacitors per board for stable GPU mining power delivery
This kit provides six riser adapters that convert a motherboard PCI-E 1X slot into a 16X physical connector for GPU mounting. It is intended for builders assembling multi-GPU mining rigs who need to space cards away from the board. The package includes six complete sets, each with a riser board, extension cable, USB 3.0 cable and PCI-E adapter.
Each riser board measures 13 by 4.4 cm and connects to the motherboard via a 60 cm USB 3.0 cable, allowing flexible card placement. Power is supplied through two 6-pin and one 4-pin connectors on the board, drawing current directly from the PSU rather than the slot. Gold-plated contacts and four solid capacitors aim to stabilise delivery. A frequent issue is loose USB cable seating, which can cause the GPU to disappear from the system; reseating usually resolves it.
Verify that your motherboard has enough free PCI-E 1X, 4X, 8X or 16X slots to accept the number of risers you plan to install. Confirm your power supply offers sufficient 6-pin and 4-pin leads for every riser board, as each requires independent auxiliary power. The kit works with Windows, Linux and macOS without proprietary drivers. Buyers who need internal case mounting brackets or shorter cables for compact chassis should look elsewhere.
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| Product | |
|---|---|
| Product type | Riser Card |
| Ports & slots | |
| External USB ports | 2 Port |
| In the box | |
| In the box | 1x USB cable. (Random Color) 1x 1X to 16X extension cable. 1x PCIE riser board. 1x PCIE adapter. |
The system should detect the graphics card in Device Manager or lspci at x1 link speed, and mining software will show active hashrate without PCIe errors.
Each kit includes a 1X-to-16X extension cable, PCIe riser board, PCIe adapter, and 60cm USB 3.0 cable; you must provide 6-pin or 4-pin power leads from your PSU.
The single 009S version supplied is compatible with 1x, 4x, 8x and 16x PCI-E slots, so one kit type covers all those motherboard connectors.
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