M2-ATX CHANGE LOG 01/15/2006 Production release 01/15/2006 Firmware release 1.1 (from M1-ATX) 04/15/2006 Rotate 12V ATX connector (mechanical issues) 04/15/2006 Connect R33 pull-up to VLIN5 instead of VCC 09/15/2007 Firmware release 1.2: Timing changes for PS_ON, 5VSB ON-delay 05/17/2007 Firmware release 1.3: Fixed PWR_OK delay at shut down 06/23/2007 Change R24 to 46.3k (12.05V output), fixed 12 V rail over-shoot 08/10/2007 Removed C1, 5V rail fix 08/10/2007 New PCB UL number UL mark: E154554 08/10/2007 Introduced serial number sticker UEC07xxxx and higher 06/06/2008 Serial number UEC0819xxx and higher 06/06/2008 C41 (was 10nF) 15nF X7R 10% 3.3/5V startup timing fix (6-26V) 06/06/2008 C35 (was 10nF) 22nF X7R 10% 3.3/5V startup timing fix (6-26V) 06/06/2008 Put back C15, 0.1uF X7R 10% 3.3/5V startup timing fix (6-26V) 06/06/2008 Firmware 1.4: Shut down while ACPI is not fully up fix via 60 second AutoLatch feature 06/06/2008 Firmware 1.4: Officially introduce3 more timing schemes: 0001 10 minutess / 1 hour 1001 15 minutes / 2 hours 0101 1 hour / 1 hour 15 minutes NOTE: These changes were availabe in firmware version 1.3 but never advertised to the public. 06/06/2008 Firmware 1.4: In P0 (dumb PSU mode) if ignition is used, can act as an UPS system. (consult M2-ATX product page for more information) ===================================================== 06/18/2008 Extended availability for the next 5 years ===================================================== 06/26/2008 Serial number UEC0819xxx with silver mark or serial number higher than UEC0822xxx Changed C35 to 15nF Removed C15 in order to prevent rare cases in which 5V starts oscilalting at startup.