SIIG Legacy and Beyond USB 3.0 2-Port External PCIe Host Card

SpecPicks Verdict

SpecPicks scored SIIG Legacy and Beyond USB 3.0 2-Port External PCIe Host Card using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. SIIG's external storage 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 external storage 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

• ✅ Quickly adds two USB 3.0 ports through an available PCI Express slot for connecting a variety of external USB devices
• ✅ Supports SuperSpeed USB 3.0 data transfer rates up to 5Gbps providing fast and smooth data transmission; Please note that the actual transmission speed is limited by the setting of the device connected.
• ✅ Supports UASP (USB Attached SCSI Protocol) and increases data transfer speed with external storage devices especially for SSDs
• ✅ Each port provides power output up to 900mA and features Over-Current protection to further protect your connected devices; EXTERNAL POWER CONNECTOR (MOLEX) NEEDED.
• ✅ Installs into standard height and low profile system chassis with the included brackets
• ✅ At SIIG, we are proud of our products and service. Our products are of high quality and built to last. We provide Manufacturer Warranty for our products and email support. Contact us thru Amazon if any issues arise.

Full Specifications

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SIIG Legacy and Beyond USB 3.0 2-Port External PCIe Host Card | Add 2 USB ports to a PCIe desktop at 5Gbps; UASP and dual-profile brackets support storage and high-speed peripherals. 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.

Buy on Amazon — $24.76

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.