Just to refresh your memory, the SX-1 is a OCM/Zemmix clone, in mini ITX form factor. It fits into any ITX/ATX PC case, and can use its front panel connections (power button, activity leds, audio jack, etc). Besides that the SX-1 board retains all the features from the OCM/Zemmix and its 100% compatible with KdL firmwares.
The SX-1 also features an external cartridge caddy to keep the cartridge slots outside the case.