When installed in an Intel® Xeon Based Server allows you to use two 1:8 DVD/CD Tower Publisher HLX together for duplicating and LightScribe label burning of up to 16 DVDs/CDs at one time.Four eSATA fully compliant External connectors on the cardCompliant with PCI-X Specification, revision 1.0aSupports 133 MHz PCI-X with 64-bit dataAll registers appear in unified memory spaceFull-chip command completion status accessible with single PCI-X burst accessI/O port access to register spaceFully compliant with Serial ATA 1.0a and Serial ATA IIExtensions to Serial ATA 1.0a Specifications revision 1.1Hot-plug capabilitySupports Serial ATA Generation 2 transfer rate of 3.0 GbpsSupports Serial ATA II Port Multiplier 1.0 Specifications revision 1.1Supports four independent Serial ATA channelsIndependent Link, Transport, data FIFO, command fetch, scatter/gather, and command execution Complete with drivers for Windows XP, 2003 Server and VistaeSATA 4-Port PCI-X Host Adapter