Expansion Modules Back to Expansion Modules Home > Expansion Modules Filtered Search A402 Commell A402 Expansion Module - Half-size ISA 4 x RS-232 Serial Card Function ASYNC Card Bus Interface ISA Manufacturer COMMELL Request Quote A480 Commell A480 Expansion Module - Half-size ISA 8 x RS-232 Serial Card Bus Interface ISA Function ASYNC Card Manufacturer COMMELL Request Quote