Product Overview
The PR51RX1 is a high-performance PCIe multi-function bridge chip that can expand a single PCIe Gen4 x1 upstream interface into multiple downstream interfaces. This product configuration includes: 2 USB 3.2 Gen2 Type-C ports (10 Gbps), 3 USB 3.2 Gen1 Type-A ports (5 Gbps), 1 2.5GBASE-T Ethernet port, and 4 SATA Gen3 ports (6 Gbps). This chip is suitable for desktop computers, workstations, servers, and embedded platforms, providing high-speed data, networking, and storage expansion capabilities for the system.
Product Overview
• PCI Express
- Compatible with PCIe Gen4 x1; backward compatible with Gen3/Gen2/Gen1
- Maximum bandwidth: 16 Gbps (unidirectional)
- Supports ASPM L0s/L1 and L1 sub-states
- Supports MSI/MSI-X interrupts
- Supports AER, LTR, and VC
• 2 USB 3.2 Gen2 Type-C ports
- Data rate: 10 Gbps (SuperSpeed+)
- Supports reversible plug detection and internal MUX switching
- Supports CC logic, providing 5V/3A power
- Compatible with xHCI 1.2 specification
• 3 USB 3.2 Gen1 Type-A ports
- Data rate: 5 Gbps (SuperSpeed)
- Backward compatible with USB 2.0/1.1
- Supports Battery Charging specification BC 1.2
- Compatible with xHCI 1.1 specification
• USB Common Features
- Supports control, bulk, synchronous, and interrupt transfers
- Supports up to 64 devices per port
- Supports UAS, BOT, UAC, UVC, HID
- Supports remote wake-up, connect/disconnect wake-up, and overcurrent wake-up
- Supports per-port independent power control and overcurrent protection
• 1 x 2.5GBASE-T Ethernet port
- Supports 10/100/1000M/2.5G auto-negotiation
- Compatible with IEEE 802.3, 802.3u, 802.3ab, 802.3bz
- Supports full-duplex flow control (802.3x)
- Supports Energy Efficient Ethernet (802.3az)
- Integrated PHY transceiver with MDI/MDI-X auto-crossover and polarity correction
- Supports protocol offloading: ARP (IPv4), NS (IPv6)
- Supports Receive-Side Scaling (RSS)
- Supports jumbo frames up to 16 KB
- Supports Wake-on-LAN (Magic Packet, Wake-Up Frame)
- Customizable LED indicators (link/activity/speed)
• 4 SATA Gen3 ports
- Speed: 6Gbps, backward compatible with Gen2/Gen1
- Compliant with AHCI 1.3.1 specification
- Supports NCQ (Native Command Queuing)
- Supports power management: Partial, Slumber
- Supports auto-negotiation
System Support
• Windows
• Linux
Complete Package Contents
- 1 x Lekuo SouthBridge Mini
- 1 x User Manual
- 1 x Short Metal Bracket
- 1 x 19-pin USB 3.0 to Dual USB-A Female Connector Cable (Optional)
