ASB3940UW - Single Channel, 32-bit, 33 Mhz PCI Bus Master Ultra Wide (SE) SCSI ASB3950UW - Dual Channel, 32-bit, 33 Mhz PCI Bus Master 1st Channel: Ultra Wide (SE) 2nd Channel: Ultra Wide (SE) ASB3940U2W - Single Channel, 32-bit, 33 Mhz PCI Bus Master Ultra2 Wide (LVD/SE) ASB3950U2W - Dual Channel, 32-bit, 33 Mhz PCI Bus-Master 1st Channel: Ultra Wide (SE) 2nd Channel: Ultra2 Wide (LVD/SE) ASB3950U160MW - Dual Channel, 64-bit, 66 Mhz PCI Bus Master 1st Channel plus 2nd Channel: Ultra 160M Wide (LVD/SE) SE - Single Ended LVD/SE - Low Voltage Differential or Single Ended. The SCSI I/O cells detect the mode (LVD or SE) of the attached devices and operate in that mode. Note if a single SE device is attached to the SCSI bus all devices on the SCSI bus operate in SE mode.
Kot_Maciek