/SPEED=value

    Sets the speed of the LAN.

    Valid values are 10, 100, 1000, 10000, or autonegotiate; the last
    choice, autonegotiate, selects the 10 Mb/s for Ethernet, 100 Mb/s
    for Fast Ethernet, 1000 Mb/s for Gigabit Ethernet, and 10000 Mb/s
    for 10-Gigabit Ethernet. If you select autonegotiate, the LAN
    driver repeats autonegotiation.