EXC-8000PCIe/xx card & M8KSerial module
The EXC-8000PCIe/xx card for the PCI express bus supports up to sixteen Serial channels using the M8KSerial module.
PCIe Data Sheet 8000 Users Manual M8KSerial HW Manual M8KSerial2 Data Sheet
EXC-4000PCIe/xx card & M4KSerial module
The EXC-4000PCIe/xx card for the PCI express bus supports up to sixteen Serial channels using the M4KSerial module.
2000 PCIe data sheet 4000 PCIe data sheet M4KSerial+ data sheet M4KSerial data sheet