Which of the following is NOT a type of motherboard expansion slot

Which of the following is NOT a type of motherboard expansion slot isa expansion slot Identifying an 8-bit ISA card · looks like a Fujitsu 6681 is a terminal: The Fujitsu 6681 is a terminal compatible with IBM's 3270 terminal isa slot uses But it might work if ISA card doesn't rely on clock being constant all that much, then any jitter in CPU transfer shouldn't matter too much

isa slot uses Toshiba made a few models with ISA slots

isa expansion slot Developed as a response to IBM's proprietary Micro Channel Architecture , EISA provided an open standard for 32-bit expansion cards, The PD slot or PDS is the oldest form of expansion slot Up to three slots can be accommodated, and each slot also accepts an ISA card, but not an MCA or EISA