Sun Microsystems Inc has released a new multiport Ethernet controller board for any of its Sparc-based machines, running Solaris 2.3 and up, which have an SBus slot. The SBus Quad Ethernet Controller has four fully-buffered twisted-pair ports, which each run independently at 10Mbits per second. This means customers can divide heavily loaded local area networks into four smaller networks – or if multiple boards are used, up to 20 smaller ones. Performance and reliability should improve as a result because fewer machines are affected in the event of traffic overload or a network fault. It will be $1,000 when it arrives this month.