USB Storage

PL-2773 USB3.0 / eSATAII to SATAII Bridge Controller

The PL2773 is a single-chip SuperSpeed USB3.0 or eSATAII to SATAII compliant bridge controller that is designed to perform seamless protocol transfer between the USB3.0/eSATA and SATAII interface. The PL2773 is implemented according to the USB Mass Storage Class driver. It supports USB3.0 SuperSpeed with 5Gb/s bandwidth and eSATA with 3Gb/s bandwidth. SuperSpeed USB 3.0(5Gb/s) delivers ten times the performance of Hi-Speed USB 2.0(480Mb/s) while offering backward compatibility with the billions of USB-enabled PCs and peripheral devices. It is fully backward compatible to all USB 2.0 and USB 1.1 hosts and operates under SuperSpeed, Hi-Speed, and Full-Speed USB connections. eSATA Mode has data bandwidth with 3Gbps and backward compatible with 1.5Gbps. The PL2773 also has an embedded high performance 8-bit microcontroller that can be used to support versatile system applications such as one button backup, power control, and other features for USB/eSATA port.


  • Compliant with USB 3.0 and USB2.0 Specification
  • Serial ATA Revision 3.0 Specification Compliant
  • Ultra-low power 1.2V core operating voltage by 0.13um process
  • Embedded USB3/USB2/SATA PHY and Controller
  • Configurable USB3/eSATA connections priority
  • Switch USB3 or eSATA connection automatically
  • Multi-function General Purpose IO (GPIO) pins can be defined for USB speed LED, button inputs, and other special functions
  • Applications support : OTB, Autorun/Password, Capacity Indicator, Power management
  • Support Serial ATA hot-plug
  • Support single 30MHz reference clock
  • Firmware upgradeable through USB interface
  • Support PWM interface and generic SPI/I2C master/slave interface
  • Provide SDK for General Purpose IO pins for further applications
  • Package Type : LQFP64

Datasheets & Notices

Name Download
PL2773 SuperSpeed USB 3.0/eSATA Combo to SATA Bridge Product Datasheet Download

Drivers & Software

Name Download
PL277x HDD Software Utilities All-In-One Installer Executable Program
For Windows XP/Vista/7

For Prolific PL2771 & PL2773 USB 3.0 Chips Only
Includes following:
(1) Prolific Capacity
(2) Prolific USBFast w/ User Manual
(3) Prolific Backup w/ User Manual
(4) Prolific iSMART w/ User Manual

PL2x7x Prolific Storage Backup Software Utility for Mac OS (USB Only)
System Requirement: Mac OS X 10.5 and above

For Backup Function, Restore Function, P1_7 Backup Button
Includes User Manual


Reference Design Guide

Name Download
PL2773 JBOD-AutoMirror Application Design Kit
Includes Reference Schematic, Application Note, Firmware, and EEP Config SDT File
Check for latest JBOD-AutoMirror Firmware.
PL2773 Reference Schematic Design Guide (USB 3.0/eSATA Combo to SATA) Download

Application Note & User Manual

Name Download
PL2773 SPI Flash Supported List Download
PL2773 JBOD-AutoMirror Design Application Note Download

MP Tools (For Vendors Only)

Name Download
PL277x Multi-Port Manufacturing (MFG) Kit Tool Program
PL277x Multi-Port Manufacturing (MFG) Kit Tool Program
For Production Use Only
Includes User Manual PDF

Firmware (For Vendors Only)

Name Download
PL2773 SuperSpeed USB 3.0/eSATA Update Firmware Hex File
Firmware Version: 20120326 (Checksum: 9AF1)
NOTE: Use Prolific Storage MFG Kit to update firmware (USB only)
PL2773 SuperSpeed USB 3.0 (JBOD AutoMirror) Update Firmware Hex File
Firmware Version: 20120307 (Checksum: 7D59)
NOTE: Use Prolific Storage MFG Kit to update firmware (USB only)