In a nice 'retro' touch, the shutter button is threaded for a good old-fashioned mechanical cable release.
The small flash unit is placed rather close to the lens, roughly in the center of the front plate. It has a rather modest guide number of 6.4 at ISO 200, although as the camera manual is keen to point out, this does translate to a range of up to 9m at ISO1600.
Because of the X100's lens shutter design, though, the flash will sync at all shutter speeds including 1/4000 sec.
In the center of the top plate is a hot shoe for external units.
Note that the positioning of the contacts on the X100 is different from those on Fuji's old S-series SLRs (which were based on Nikon bodies), suggesting that it won't be able to use the same flash units with full functionality.
This switch, on the left-hand side of the camera, switches the focus mode between manual, single, and continuous. The middle position isn't very positive meaning AF-S can be fiddly to set, despite it being the most-used mode: we'd prefer to see AF-C there instead.
Continuous AF uses the center point of the frame only. The X100 cannot track a moving subject across the frame.
The X100's two connector ports, micro-USB and mini-HDMI, sit behind a hinged plastic flap on the grip side of the camera.
The battery and memory card live under a door in the base of the camera. The battery is the NP-95, as previously seen in the F30 and F31fd compacts. Oddly it can easily be inserted the wrong way round, despite having an asymmetric shape.
The X100 is compatible with SD, SDHC and SDXC cards, and also has a small amount of internal memory (20Mb).
The X100 ships with an external charger, but in what comes as something of a surprise, this requires an additional (unlabelled) small plastic adapter piece to be fitted first before the battery will fit. (Click through on the image to see the adapter in place).
Charging a completely exhausted battery takes about 3 hours.
The camera's baseplate is also home to the tripod socket and the grille for the built-in speaker. The former is somewhat off-center from the lens axis, and very close to the battery/card compartment door (so you won't be able to change either with the camera on a tripod).