Does the mATX A1 have an SVGA out port?
Note that SVGA 'usually' refers to the screen mode standard/capability not the physical video out socket. An ATI Radeon 7000 chipset can drive SVGA screen resolutions via the VGA socket.
Ever since 90s era ATI Rage/Mach** chipsets (the precursor to Radeon family); they can drive and display SVGA resolutions.
**e.g. ATI Mach 64