Occupying a single CompactPCI slot, the Mariner C157 CPU board is said to be the industry's first based on the Embedded Roadmap version of Intel's Pentium III (Coppermine) processor, which offers an entry-level clock speed of 600 MHz. As a result, the Mariner offers more than double the performance of boards based on the Pentium II Mobile module. Not only is the Coppermine processor scalable to 733 MHz, but it also will be in production until at least 2007.On the board are 128/256 kbytes of on-die L2 cache and 512 Mbytes of field-upgradeable SODIMM main memory. It's also equipped with a 10/100Base-Tx Ethernet interface (with Wake-On-Line) and dual Ultra DMA-33 IDE hard drive interfaces. Also included is 32 Mbytes of flash memory, a pair of USB ports, two PMC expansion slots, two communication ports, a printer port, a floppy port and mouse and keyboard ports. The board supports Windows NT 4.0, VxWorks, Linux, Solaris and QNX.