Aim tti single power supply 420 powerflex max 60v or 20a cpx400s aim tti cpx400s p the aim tti cpx400s is a new single output version of the best selling cpx400 series the ultra compact design quarter rack 3u takes up minimum space for bench or system use powerflex regulation enables the 420w of power to be configured to suit each specific application p p the powerflex regulation system used on the aim tti cpx400s combines a high frequency pre regulator with a linear post