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SIIG 2-Port USB 3.1 Gen 2 PCIe Card, 10Gbps, UASP, JU-P20912-S2
SIIG

SIIG 2-Port USB 3.1 Gen 2 PCIe Card, 10Gbps, UASP, JU-P20912-S2

Bottom line: The SIIG 2-Port USB 3.1 Gen 2 PCIe Card is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Supports plug-n-play, hot-swapping, and backwards compatible with USB 1.1 / 2.0 / 3.0
  • ✓ Backed by SIIG's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored SIIG 2-Port USB 3.1 Gen 2 PCIe Card using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. SIIG's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Complies with PCI-Express 3.0 standard Supports the latest USB generation 3.1 Gen 2 with data transfer rate up to 10Gb/s
  • Supports plug-n-play, hot-swapping, and backwards compatible with USB 1.1 / 2.0 / 3.0
  • Each USB port provides up to 900mA power output to better support the power consumption of your connected device
  • Each USB port features independent over-current protection to further protect your device
  • Built-in 15-pin SATA power connector connects to the system power supply, as needed, to ensure sufficient power is supplied to the USB ports Dual-profile design installs into different form factor system chassis with the included full and low profile brackets
  • At SIIG, we are proud of our products and service. Our products are of high quality and built to last. Contact us through Amazon if any issues arise.

Full Specifications

BrandSIIG
StyleClassic
Style NameClassic
Unit Count1 Count
ConnectivityUSB
Model NumberJU-P20912-S2
Mfr Part NumberJU-P20912-S2
Compatible DevicesDesktop
Hardware InterfacePCI, PCI Express 3.0, USB 1.1
Warranty Description2 Year Manufacturer
Item Dimensions L x W x H4.72"L x 3.94"W x 0.79"H

Ready to buy?

SIIG 2-Port USB 3.1 Gen 2 PCIe Card, 10Gbps, UASP, JU-P20912-S2 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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SIIG 2-Port USB 3.1 Gen 2 PCIe Card, 10Gbps, UASP, JU-P20912-S2
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