JU‑P40811‑S1 Specifications
SIIG 4‑Port SuperSpeed USB 3.0 PCIe Adapter
Manufacturer: SIIG, Inc.
Manufacturer Model: JU‑P40811‑S1
Product Line: SIIG USB Expansion Cards
Product Series: 4‑Port USB 3.0 PCIe Card (Quad Core)
Product Type: USB Expansion Card (PCI Express)
Product Name: SIIG 4‑Port USB 3.0 (USB 3.2 Gen 1) PCIe Card
KEY FEATURES:
USB Ports: 4 × SuperSpeed USB 3.0 Type‑A (5 Gbps)
Host Interface: PCI Express 2.0 ×4
Chipset: Renesas uPD720202 with Quad‑Core architecture for independent ports
Total USB Bandwidth: Up to 20 Gbps (5 Gbps per port)
Supports USB legacy speeds: 1.5 Mbps, 12 Mbps, 480 Mbps, 5 Gbps
UASP (USB Attached SCSI Protocol) support for enhanced performance
Each port has independent over‑current protection
SATA power connector for additional power to high‑draw USB devices
Low‑profile PCIe bracket design (fits small form factor systems)
PERFORMANCE:
Maximum Data Transfer Rate: Up to 5 Gbps per USB port
Total combined USB bandwidth: ~20 Gbps
Independent channels per port improve multi‑device throughput
ENVIRONMENTAL & RELIABILITY:
Designed for desktop expansion and high‑speed USB connectivity
Operating Temperature: 0 °C to ~60 °C
Humidity: 5 %–95 % non‑condensing
Certifications: CE, FCC, RoHS compliant
Warranty: Limited 2‑year manufacturer warranty
PHYSICAL:
Form Factor: PCI Express plug‑in card (low‑profile)
USB Connector Type: 4 × USB‑A 3.0 external ports
Approx. Dimensions: ~150 mm × ~~80 mm × ~20 mm (card board)
Weight: ~0.07 kg

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