SCSI-2 Interface which connects to the PCMCIA port of the A1200 and A600 which is capable of up to 2.6MB/s. The supplied cable is a large centronics style cable. It also includes a high speed serial interface which is a 9pin D-TYPE and is capable of 115,200 on a fairly basic Amiga or up to 230,400 on an expanded Amiga. The serial support has supports RTS/CTS (aka Hardware Handshaking) and of course XON/XOFF (software handshaking). This device doesn't appear to use DMA. The surf squirrel does not support auto-booting from a cold boot (power cycle) however drivers can be made resident by booting from another HD, resetting and then the HD attached to the surf squirrel can be booted. There are no jumpers similar such configuration options on the card.
Thanks to Iggy Drougge, Simon West and Takahasi Kasiko