On Wed, Dec 19, 2018 at 10:22 AM David Kastrup <dak@gnu.org> wrote:

I could offer an RME Hammerfall DSP with PCcard32 (I don't think there
is a PCMCIA card for any RME: they'd just not have the bandwidth.
Because of the identical size factor, the difference is lost on many).

RME used "Cardbus" interfaces. From http://www.bixnet.com/pccaandex.html

"CardBus are PCMCIA 5.0 or later (JEIDA 4.2 or later) 32-bit PCMCIA devices, introduced in 1995 and present in laptops from late 1997 onward. CardBus is effectively a 32-bit, 33 MHz PCI bus in the PC Card form factor. CardBus includes bus mastering, which allows a controller on the bus to talk to other devices or memory without going through the CPU. Many chipsets are available for both PCI and CardBus, such as those that support Wi-Fi."