USB 2.0 Fast Ethernet Fiber SFP ADAP AX88772C

USB 2.0 ASIX AX88772C Fast Ethernet Fiber adapter. Single chip USB 2.0 to MII, single chip MII to Ethernet and USB Bridging controller in Dual-PHY mode

  • PO.: ST717
  • P/N.: SU-LR8772A-FB
  • Bus Type: USB TYPE
  • Media Port: SFP LC Fiber
  • Main Chipset: ASIX AX88772C

USB 2.0 ASIX AX88772C Fast Ethernet Fiber adapter

Single chip USB 2.0 to MII, single chip MII to Ethernet and USB Bridging controller in Dual-PHY mode


The AX88772C USB 2.0 to 10/100M Fast Ethernet controller with Microsoft AOAC(Always On Always Connected) support is a high performance and highly integrated ASIC which enables a low cost, small form factor, and simple plug-and-play Fast Ethernet network connection capability for desktops, notebook PCs, Ultrabooks, cradles/port replicators/docking stations, game consoles, digital-home appliances, and any embedded system using a standard USB port.


   ● Single chip USB 2.0 to 10/100M Fast Ethernet controller

   ● Single chip USB 2.0 to RMII, support HomePNA and HomePlug PHY

   ● Single chip USB 2.0 to Reverse-RMII, supports glueless MAC-to-MAC connections

   ● USB Device Interface

  -- Integrates on-chip USB 2.0 transceiver and SIE compliant to USB Spec 1.1 and 2.0

  -- Supports USB Full and High Speed modes with Bus-Power or Self-Power capability

  -- Supports 4 endpoints on USB interface

  -- Supports AutoDetach power saving, Detach from USB host when Ethernet cable is unplugged

  -- High performance packet transfer rate over USB bus using proprietary burst transfer mechanism

  ● Fast Ethernet Controller

  -- Integrates 10/100Mbps Fast Ethernet MAC/PHY

  -- IEEE 802.3 10Base-T/100Base-TX compatible

  -- IEEE 802.3 100BASE-FX compatible

  -- Supports twisted pair crossover detection and auto-correction (Auto-MDIX)

  -- Embeds SRAM for packet buffering

  -- Supports IPv4/ IPv6 packet Checksum Offload Engine to reduce CPU loading, including IPv4 IP/TCP/UDP/ICMP/IGMP & 

      IPv6 TCP/UDP/ICMPv6 checksum check & generation

  -- Supports full duplex operation with IEEE 802.3x flow control and half duplex operation with back-pressure flow control

  -- Supports 2 VLAN ID filtering, received VLAN Tag (4 bytes) can be stripped off or preserved

  -- PHY loop-back diagnostic capability

  -- Supports Multiple unicast MAC destination address filter

  ● Support Wake-on-LAN Function

  -- Supports Suspend Mode and Remote Wakeup via Link-change, Magic packet, MS wakeup frame and external wakeup pin

  -- Supports Protocol Offloads (ARP & NS) for Windows 8 and 7 Networking Power Management

  -- Optional PHY power down during Suspend mode

  -- Supports 32 bitmap Wake on LAN Patterns

  -- Supports Wake Packet Indication

  -- Supports Receive Filter Wakeup

  ● Versatile External Media Interface

  -- Optional RMII interface in MAC mode allows AX88772C to work with HomePNA and HomePlug PHY

  -- Optional Reverse-RMII interface in PHY mode allows AX88772C to support glueless MAC-to-MAC connections

  ● Advanced Power Management Features

  -- Supports dynamic power management to reduce power dissipation during idle or light traffic period

  -- Supports very low power Wake-on-LAN (WOL) mode when the system enters suspend mode and waits for network event to 

      wake it up

  ● Supports automatic loading of Ethernet ID, USB Descriptors and Adapter Configuration from EEPROM after power-on initialization

General specification
Controller-processorASIX AX88772C
Applicable NetworkUSB 2.0 Fiber optic Network
Upstream portUSB 2.0 AF
Downstream portSFP LC
Transmission rate100Mbps
Network topologyIntegrates 10/100Mbps Fast Ethernet MAC/PHY
IEEE 802.3 10Base-T/100Base-TX, IEEE 802.3 100BASE-FX 
System requirements

Windows Server2003 / XP / Vista / Windows 7/ Windows 8 / Windows 8.1 / Windows 10 (32/64bit)

DOS, Linux, MAC OS

Hardware & environment

LED IndicatorsN/A
MaterialPlastic shell + metal fiber
CertificationsFCC, CE, RoHS
Operating temperature0℃ -- 70℃
Storage temperature-55 °C -- +125 °C
Relative humidity5%--95% Non-condensing

Packing Accessories list

1 x USB 2.0 to Fast Ethernet Fiber adapter

1 x User's Manual
1 x CD Driver


Only the above package contents, other products are not included. 

The allowable error of size measurement is +/- 1~3mm, and the weight of the product is subject to the actual product. 

DimensionsL71 x W45 x 18mm
Package SizeL175 x W125 x H30mm (Built-in blister)
Product weight g
Package weight




PO#P/NSpecificationsOrdering Note
ST717SU-LG8772A-FBUSB 2.0 to Fast Ethernet Fiber adapter  
Based on ASIX AX88772C Ethernet Controller


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