======メモ======
その他のメモ

=====LEDの意味=====

LEDの表示内容
    ACT – D5 (Green) – SD Card Access
    PWR – D6 (Red) – 3.3 V Power is present
    FDX – D7 (Green) – Full Duplex (LAN) connected
    LNK – D8(Green) – Link/Activity (LAN)
    100 – D9(Yellow) – 100Mbit (LAN) connected