Usb2Xchange Connectors; Hot-Plugging - Adaptec USB2Xchange User Manual

USB2Xchange Connectors

The USB2Xchange is an integrated adapter with a 50-pin
high-density connector at one end and a USB connector at the
other, as shown in the figure below.
50-pin high-density
SCSI connector
The USB2Xchange adapter acts like a self-powered device— it
receives its electrical power from attached SCSI devices. If no
device is available, the adapter switches automatically to receive
power from the USB bus.
You may need to use an optional DC power supply in some rare
cases—for example, if you're using an unpowered USB hub with
attached SCSI devices that do not supply SCSI termination power.
See Understanding the USB2Xchange Power Supply on page 21
more information.
Note: Adaptec strongly recommends that you plug the
USB2Xchange adapter directly into a USB port on your
system. If you must connect through a USB hub, use only a
self-powered USB hub.

Hot-Plugging

The USB2Xchange adapter is hot-pluggable, which means you can
connect and disconnect it from a live system.
However, SCSI devices are not hot-pluggable. You must shut
down your device and your computer before disconnecting a SCSI
device from the USB2Xchange adapter.
USB connector
Introduction
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