rapidship929 Store TOSHIBA STRATA DK RCTUD3A LARGE CPU CARD RCTUD3 YOU ARE looking ON A TOSHIBA RCTUD3A LARGE CPU CARD. THIS CARD WILL WORK ON DK280 & DK424 TOSHIBA PHONE SYSTEMS.TESTED AND WORKING GOOD![!brand:toshiba!][!mpn: RCTUD3A!]