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My aunt must bring her 2012 HP Deskjet 3510, bought in Canada, to Hong Kong where she'll be working. She has checked that the AC Power Adapter states "100-240V" as beneath.

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  1. What's the cord pinpointed with the red arrow called? Does she need to bring it?

  2. Does she simply attach a plug adapter to the end of the red-arrowed cord? Or must she buy another cord like it, but for 220V?

  • The same equipment can be used as is. A plug adapter may be needed (I don't know the standards for HK, if the same as mainland China then typically US plugs fit). – GabrielaGarcia Oct 28 '18 at 20:18
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    Hong Kong is not the same as the US. See IEC - World Plugs. An Adapter will be needed (or just buy a new mains cable in any computer shop) – DavidPostill Oct 28 '18 at 20:49
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    Electricity and Voltage | Hong Kong Tourism Board "The majority of electrical outlets in Hong Kong take a three-pronged UK-style plug." – DavidPostill Oct 28 '18 at 20:50
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Hong Kong Power Outlets

What's the cord pinpointed with the red arrow called?

It's an AC Power Cord - either an IEC 320 C7 (non-polarized) or an IEC 320 C7 (polarized) - cannot be sure from your image.

Does she need to bring it? Does she simply attach a plug adapter to the end of the red-arrowed cord?

She can either bring it and buy an appropriate adapter (Canada to UK Plug Adapter), or just buy a new cable with the correct plug from any computer shop.

See IEC - World Plugs for more information on plugs in different countries.

Must she buy another cord like it, but for 220V?

No. Her adapter is already rated for 100-240V. Hong Hong is 220V.

Electricity and Voltage | Hong Kong Tourism Board:

The standard electrical voltage in Hong Kong is 220 volts AC, 50Hz.

...

The majority of electrical outlets in Hong Kong take a three-pronged UK-style plug. You can buy an inexpensive adapter for your electrical equipment at most convenience stores.

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