Adaptec USB2Xchange User Manual
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Contents
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2IntroductionUSB2Xchange ConnectorsThe USB2Xchange is an integrated adapter with a 50-pinhigh-density connector at one end and a USB connector at theother, as shown in the figure below.The USB2Xchange adapter acts like a self-powered device— itreceives its electrical power from attached SCSI devices. If nodevice is available, the adapter switches automatically to receivepower from the USB bus.You may need to use an optional DC power supply in some rarecases—for example, if you’re using an unpowered USB hub withattached SCSI devices that do not supply SCSI termination power.See Understanding the USB2Xchange Power Supply on page 21 formore information.Note: Adaptec strongly recommends that you plug theUSB2Xchange adapter directly into a USB port on yoursystem. If you must connect through a USB hub, use only aself-powered USB hub.Hot-PluggingThe USB2Xchange adapter is hot-pluggable, which means you canconnect and disconnect it from a live system.However, SCSI devices are not hot-pluggable. You must shutdown your device and your computer before disconnecting a SCSIdevice from the USB2Xchange adapter.50-pin high-densitySCSI connectorUSB connector |
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