STARTECH PEXUSB3S25 2 Port PCI Express USB 3.0 Expansion Card
- 2x USB Ports
- USB 3.0
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Adds five USB 3.2 10 Gbps ports via a PCIe x4 slot with ASMedia and VIA controllers, plus internal headers for front-panel connectivity
This EN-Labs add-on card converts a PCIe 3.0 x4 slot into five USB 3.2 Gen 2 ports. It provides three Type-A and two Type-C connectors plus a Type-E A-key header and a 19-pin internal header for front-panel access. The board uses ASMedia ASM3142 and VL822 controllers and requires no external power connector. Driver-free operation is supported on Windows 8, 10 and 11.
The PCIe 3.0 x4 host link caps total throughput at 16Gbps while each individual port can reach 10Gbps. Simultaneous high-speed transfers on multiple ports will share the upstream bandwidth. The card fits x4, x8 and x16 slots but will not function in an x1 slot. Compliance with the XHCI 1.0 specification ensures broad OS compatibility.
Builders upgrading from a single 10Gbps port or older 5Gbps expansion cards gain five concurrent 10Gbps ports and front-panel headers in one slot. The jump is worthwhile when multiple high-speed peripherals or front-panel Type-C ports are needed. Systems with only x1 slots available cannot use this card.
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| Product | |
|---|---|
| Brand name | EN-LABS |
| Model name | 11-001-366 |
| Product type | no |
| In the box | |
| In the box | 12CM Case fan,screws bag |
The card provides one rear Type-C, one rear Type-A, one internal Type-E A-Key and one internal 19-pin USB 3.0 header — four connectors for five logical ports. Choose the rear ports for external drives or docks, the Type-E header for a front-panel Type-C port, and the 19-pin header for classic front-panel Type-A ports.
Each port can signal at up to 10 Gbps, but the PCIe 3.0 x4 host link caps aggregate throughput at 16 Gbps, so simultaneous transfers on multiple ports will share that ceiling and real-world SSD speeds will be lower than the single-port maximum.
The card fits x4, x8 and x16 slots electrically wired for PCIe 3.0; it will not function in an x1 slot because the lane count is insufficient for the ASMedia ASM3142 and VL822 controllers.
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