SMUGDESK 4-Port USB 3.0 PCIe Expansion Card FL1100

Four USB 3.0 Ports via PCIe

The SMUGDESK expansion card adds four external USB 3.0 Type-A ports to a desktop computer through a single PCIe x1 slot. It uses the FL1100 controller chip to provide stable 5 Gbps transmission for each port. The card suits users who need more connections for external storage, office peripherals or mining riser setups. It works with Windows and Linux operating systems.

Bandwidth Limited to PCIe x1 Link

The card fits PCIe x1, x4, x8 and x16 slots but operates at x1 electrical width, so total throughput cannot exceed the single-lane PCIe bandwidth. All four ports share this upstream link, so simultaneous high-speed transfers on multiple drives will contend for the same 5 Gbps USB 3.0 ceiling. The interface is backward compatible with USB 2.0 and USB 1.1 devices, which will run at their native slower speeds. Buyers who need dedicated bandwidth per port should consider a multi-lane host adapter instead.

Low-Profile Bracket and Standard Mounting

A low-profile bracket is included for slim chassis, while the standard bracket fits full-height cases. The four Type-A ports face the rear panel for direct cable access without internal headers. No auxiliary power connector is present, so the card draws all power from the slot. Builders who require internal USB headers or additional power for high-current devices will not find those provisions on this card.