Instructions for replacing the built-in (non-gigabit) Ethernet:1. Connect this to your Pi2. Sign in to Terminal 3. Run: sudo reboot4. Wait for loading, login, execute: ifconfig5. Make a note of HWaddr for eth0 (built-in ethernet) and eth1 (this adapter)6. Create a file: /etc/udev/rules.d/70-persistent-net.rules7. Add the following two lines: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="new", ATTR{dev_id} =="0x0", ATTR{ type}=="1", KERNEL=="eth*", NAME="eth0"SUBSYSTEM=="net", ACTION==" add", DRIVERS=="?*", ATTR{address}=="old", ATTR{dev_id}=="0x0", ATTR{type}=="1" , KERNEL=="eth*", NAME="eth1". Replace *new* with Hwaddr eth1 and *old* with eth08 hack. Run: sudo shutdown -h now9. Change the Ethernet cable from the old connector to the new connector10. Disconnect the power supply from the Pi and reconnect it. This new adapter is now eth0 and the built-in adapter is eth1. If you have any rules or services that depend on eth0, they will use the new, faster connection. A NOTICE. Tested using Blackmagic Disk Speed test from Mac network client. Average read/write speed 20MB/s. The drive is a 4TB WD My Passport in ext4 format (link below) shared with the Pi via netatalk AFP. WD My Passport 4TB Portable External Hard Drive - USB 3.0 - WDBYFT0040BBK-WESN
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