Get the Soltek SLS BIOS b driver. An official Soltek software for the BIOS device. Update the Soltek SLS BIOS b drivers so that device can work. Abstract: The new Soltek SL-K8TPro motherboard is based on the between the North and Southbridge chipsets runs at MB/s while it. The SiS Southbridge is quite small and connects to the Northbridge via a bi-directional bit data bus that is able to transfer at MB/s.