On the left side of the camera is a large rubber cover behind which you will find all of the SD9's connectors. From top to bottom: IEEE 1394 (Firewire) port (cable supplied), USB port (1.1, cable supplied), Video Out terminal (cable supplied), DC-IN power connector (SAC-1 AC Adapter supplied). It's good to see Firewire (IEEE 1394) ports for fast file transfer, it would have been a double bonus to also have USB 2.0.

On the base of the SD10 you will find a metal tripod mount aligned with the center line of the lens. Unfortunately it's not aligned with the focal plane of the camera which is unusual for a D-SLR. Despite this there is sufficient body around the mount to still provide a firm grip to most tripod plates.

The SD10's flash hot-shoe has a single X-sync contact and three electronic flash connectors for use with Sigma's own STTL flash units the EF-500 DG Super SA and EF-500 DG ST SA. There is also a PC Sync terminal adapter (ST-11) which can be used to trigger studio / external flash units.

The SD10 has a metal Sigma SA lens mount. The lens release button is on the left of the mount. The SD10 also has a fairly unique 'Dust Protector' filter just behind the lens mount, this is designed to stop dust from entering the mirror / shutter chamber and collecting on the sensor surface (the bane of many D-SLR users). It is possible to remove this filter (very carefully) should it become necessary to clean the sensor.