The ExpressSAS H608 is among ATTO s first HBAs to provide high-speed 6Gb/s performance at 600MB/s per port. By utilizing a serial, point-to-point architecture, in addition to PCI Express 2.0 bus technology, ExpressSAS 6Gb/s HBAs are engineered for demanding applications. The ExpressSAS H608 features eight internal ports, and with support for SAS expanders allows connections of up to 256 end-point devices.