The third device available is the KSZ8851SML. It is also a 10/100 mac/phy controller with an SPI interface. Performance is roughly 20-25Mbps depending on the clock speed that is being run. This device can operate at 50MHz and the power is less than 100mA. An industrial temperature option is available and it has the smallest package available in the family (32 pin MLF 5mm x 5 mm). The operating systems are Linux and Windows CE.