M2-ATX CHANGE LOG 01/15/2006 M1-ATX/M2-ATX Firmware release 1.1 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 Introduced serial number sticker UEC07xxxx and higher for better tracking 08/10/2007 New PCB UL number UL mark: E154554 06/05/2008 M1/M2 Serial number UEC0819xxx and higher back to Rubycon ZHL 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 M1/M2 Firmware 1.4: Shut down while ACPI is not fully up fix via 60 second AutoLatch feature 06/06/2008 M1/M2 Firmware 1.4: Officially introduce 3 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 M1-M2 Firmware 1.4: In P0 (dumb PSU mode) if ignition is used, can act as an UPS system. (consult M1-M2-ATX product page for more information) 06/18/2008 M2-ATX Extended availability for the next 5 years 06/26/2008 Serial number UEC0819xxx with silver mark or serial number higher than UEC0822xxx 06/26/2008 Changed C35 to 15nF 06/26/2008 Removed C15 in order to prevent rare cases in which 5V starts oscilalting at startup. 11/01/2009 Serial number UEC0850xxx and higher (m2-ATX, M2-ATX-HV) 11/01/2009 changed C15 to 0.1uF X7R 10%, revert to change made on 06/06/2008 09/12/2011 Serial number UEC08114128531 and higher 09/12/2011 C34 from 10nF to 22nF/0603/X5R 10-20% 07/12/2012 EOL for FDS6680a, will prodive better or equiv low switch mosfet 07/12/2012 New UL PCB Number 10/09/2012 M2-ATX/M2-ATX-HV Extended availability for the next 5 years 06/25//2013 Extending availability for the next 5 years 03/10//2016 Extending availability for the next 5 years 10/10//2020 Extending availability for the next 5 years