Businesses using PCMCIA Type II ATA or Compact Flash cards from SiliconSystems, Sandisk or Smartmodular still have options to purchase cards that will work. These older systems use capacities as low at 16MB. The development of new less expensive controller chips has eliminated the ability to produce these smaller capacity cards. Older systems do not have the the ability to upgrade the BIOS due to lack of support from the original developer. Companies such as http://www.PCcardsDirect.com offer support to those searching for legacy support of these older systems. They offer new PCMCIA Type II ATA and Compact Flash cards starting at 16MB. More complex systems using SRAM or Linear Flash cards are also available with small capacities, 8k, with and without attribute.