Apple IMAC User Manual - Page 38
New Technologies - 22, hub and device connectivity.
UPC - 067540444435
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Basics New Technologies - 2 2 Note: Type A ports (as shown in the previous illustration) are only available from hubs. If a device (like a keyboard or display) has Type A ports for additional devices to connect to, it must have an internal hub. This information is good to know when you need to identify, map out, and troubleshoot hub and device connectivity. Note: USB ports, cables, and plugs are often labeled with the standard USB symbol shown in the following illustration. Figure 4: Standard USB Symbol
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Basics
New Technologies - 22
Note:
Type A ports (as shown in the previous illustration)
are only available from hubs. If a device (like a keyboard or
display) has Type A ports for additional devices to connect
to, it must have an internal hub. This information is good to
know when you need to identify, map out, and troubleshoot
hub and device connectivity.
Note:
USB ports, cables, and plugs are often labeled with the
standard USB symbol shown in the following illustration.
Figure 4:
Standard USB Symbol