the Serial pins to drive an LCD and this was interfering with the downloading of the program. I have gone to Serial1 and so far no issue. Have yet to try it out on the other computer, but optimistic. It is possible I could load the program without the serial connection to those pins and reconnect, or perhaps the use of (the main) serial also opens another use of the same com port used to load the program. For now though will stay with Serial1 to be sure! Regards, Peter Not convinced by this, although using the serial for other connections won't help. I have two EMs, which behave very strangely, I'll explain. The first unit I unpacked, wouldn't even load blink. The green LED just blinked now and again. Dug the second EM out and this loaded blink. However, neither CardInfo or the UDPNTP programs would work. After trying another laptop, the first was a W7 netbook, the second laptop was a Vista full laptop. I started to put together a long email to the nice guys at FT. Then I changed my mind and did some more tests. I have come to the conclusion that the USB supply from both laptops were not up to the job. After testing both boards from an XP system with a powerful PSU on the USB hub, everything worked perfectly and the blink, SD and Ethernet tests work perfectly. Got them working on both laptops only with the hub for uploading. Running