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Page 11
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4. External Power Adapter
The USB card bus adapter supports most of USB devices connection without auxiliary power
requirements. You can refer to following list of USB peripherals. If you want to connect a
higher capacity with high current storage enclosure that requires power current more than
500ma, the devise may become unstable or even crash your system to stall or crash. In this
situation, an external power adapter may be used to supply additional power. It is advised to
check the USB peripheral’s power consumption requirements prior to connecting to the USB
2.0 PCMCIA Adapter.
4.1 Low-power USB Peripherals
The following list of USB peripherals provides a general guideline for the types of devices
that require low power USB connections, and typically do not require an external power
adapter:
USB Mouse; USB Keyboard, USB Flash Disk, USB Ethernet; USB Flash Card Reader; USB
Data Link Cable; Self-powered USB Printer; Self-powered USB speaker; Self-powered
USB Scanner; Self-powered USB Digital Camera or other devices that require less
than 500mA.
4.2 High-power USB Peripherals
The following list of USB peripherals provides a general guideline for the types of devices
that typically require high power USB connections, and may require an external
power adapter:
USB Floppy Drive; High-capacity or high-powered storage hard disk enclosure;
bus-powered USB Camera; or other devices that require more than 500mA.
4.3 Specifications
If an external power adapter is required, contact a local supplier for an adapter with the
following specifications:
1. Output: DC 5V / 1.5 A (for two ports)
2. Power Plug: 1.3 (inner) * 3.5 (outer) * 9.6 mm (length)
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