COUNTRY ELECTRICITY and POWER CORD PLUG GUIDE

Below is an alphabetical listing 170 countries with their respective electrical standard as well as links to their standard two and three prong power cord plugs:

Country Electricity 2-Pin Plug 3-Pin Plug
Afghanistan 220V 50HZ YP-21 YP-21 + YP-21K + YP-47 line art YP-22 YP-22-Europe-Schuko-CEE77-Plug
Albania 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Algeria 220V 50HZ YP-21 P-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
America 110V 60HZ YP-11 YP-11 2 prong power cord YP-12 YP-12 3 prong power cord
Angola 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Argentina 110V 60HZ YP-57 YP-57-Argentina-IRAM-2063 YP-37 YP-37-Argentina-IRAM-2073
Armenia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Australia 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112
Austria 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Bahamas 110V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Bahrain 110V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12   YP-12 USA-3-Prong-Power-Cords
Bangladesh 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Barbados 115V 50HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12   YP-12 USA-3-Prong-Power-Cords
Belarus 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Belgium 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Belize 110/220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Bermuda 115V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Bhutan 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Bolivia 110V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Bosnia 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Botswana 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Brazil 115V 60HZ YP-21C YP-21C-Brazil-NBR-6147 YP-04 YP-04-NBR-14136
Brunei 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Bulgaria 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Burundi 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Cambodia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Cameroon 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Canada 115V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Cayman Islands 120V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Central African Republic 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Chad 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Chile 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-45 3P-Plug-CEI-23-16
China 220V 50HZ YP-02 YP-02-China-GB-1002 YP-03 YP-03-China-GB-2099
Colombia 110/220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Congo 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Costa Rica 120V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Croatia 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Cuba 115V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Cyprus 240V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Czechoslovak 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Denmark 230V 50HZ YP-21 YP-21-Denmark YP-26 YP-26-Denmark-3-Prong-Plug
Djibouti 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Dominican Republic 110/220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Dubai 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Ecuador 110/220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Egypt 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
El Salvador 120/240V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
England 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Estonia 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Ethiopia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Fiji 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Finland 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
France 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Gabon 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Gambia 220V 60HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Germany 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Ghana 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Great Britain 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Greece 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Greenland 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Guam 110V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Guatemala 115/230V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Guyana 120/240V 50/60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-61 YP-61-UK-Fused-Plug
Haiti 110/220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Honduras 110/220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Hong Kong 220V 50HZ YP-61 YP-61-Hong-Kong-3-Prong-Fused-Plug YP-61 YP-61-Hong-Kong-3-Prong-Fused-Plug
Hungary 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Iceland 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
India 230V 50HZ YP-81 YP-81-India-IA6A3 YP-81 YP-81-India-IA6A3
Indonesia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Iran 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Iraq 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Ireland 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Israel 230V 50HZ YP-47 YP-47-Israel-2-Prong-Plug YP-48 YP-48-Israel-SI-32
Italy 230V 50HZ YP-21 CEI-23-16-2P-Plug YP-45 3P-Plug-CEI-23-16
Ivory Coast 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Jamaica 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Japan 100V 60HZ YP-13 YP-13-Japan-2-Prong-Plug YP-12  YP-12-Japan-3-Prong-Plug
Jordan 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Kazakhstan 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Kenya 240V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Kiribati 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Korea 220V 60HZ YP-21K YP-21K-Korea-2-Prong-Plug YP-22K YP-22K-Korea-KS-C-8305
Kuwait 240V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Kyrgyzstan 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Laos 220V 50HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Latvia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Lebanon 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Liberia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Libya 125V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Lithuania 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Luxembourg 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Madagascar 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Malaysia 220V 50HZ YP-61 YP-61-Singapore-3-Prong-Plug YP-61 YP-61-Singapore-3-Prong-Plug
Maldives 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Mali 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Malta 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Marshall Island 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Mauritania 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Mauritius 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Mexico 250V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Monaco 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Mongolia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Morocco 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Mozambique 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Myanmar 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Namibia 220V 50HZ YP-81 YP-81-South-Africa-SABS-164-1 YP-81 YP-81-South-Africa-SABS-164-1
Nauru 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Nepal 220V 50HZ YP-81 YP-81-India-IA6A3 YP-81 YP-81-India-IA6A3
Netherlands 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
New Zealand 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112
Nicaragua 120V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Niger 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Nigeria 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Norway 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Oman 240V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Pakistan 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Panama 120V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Papua New Guinea 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Paraguay 220V 60HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Peru 220V 60HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Philippines 220V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Poland 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Portugal 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Puerto Rico 120V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Qatar 240V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Romania 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Russia 220V 50HZ YP-21 YP-21-Russia YP-22 YP-22-Russia-3-Prong-Plug
Rwanda 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Saudi Arabia 220V 50HZ YP-61 YP-61-Saudi-Arabia-SASO-2203 YP-61 YP-61-Saudi-Arabia-SASO-2203
Scotland 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Senegal 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Sierra Leone 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Singapore 230V 50HZ YP-61 YP-61-Singapore-3-Prong-Plug YP-61 YP-61-Singapore-3-Prong-Plug
Slovakia 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Slovenia 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Solomon Islands 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Somalia 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
South Africa 220V 50HZ YP-81 YP-81-South-Africa-SABS-164-1 YP-81 YP-81-South-Africa-SABS-164-1
Spain 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Sri Lanka 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Sudan 240V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-61 YP-61-UK-Fused-Plug
Surinam 220V 60HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Swaziland 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Sweden 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Switzerland 230V 50HZ YP-21 YP-21-Switzerland-2-Prong-Plug YP-46 YP-46-Switzerland-3-Prong-Plug
Syria 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Tahiti 220V 60HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Taiwan 110V 60HZ YP-13 YP-13-Taiwan-2-Prong-Plug YP-12  YP-12-Taiwan-3-Prong-Plug-CNS-10917
Tanzania 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Thailand 220V 50HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Togo 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Tonga 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Trinidad & Tobago 115V/230V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Tunisia 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Turkey 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Tuvalu 240V 50HZ YP-36 YP-36-Australia-AS-3112-2P-Plug YP-35 YP-35-Australia-AS-3112-Plug
Uganda 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Ukraine 230V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
United Arab Emirates 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
United Kingdom 230V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Uruguay 220V 60HZ YP-21 YP-21-Europe-CEE7-16 YP-45 3P-Plug-CEI-23-16
USA 110V 60HZ YP-11 YP-11 YP-12  YP-12
Venezuela 110V 60HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Vietnam (South) 220V 50HZ YP-11 YP-11 USA-2-Prong-Power-Cords YP-12  YP-12 USA-3-Prong-Power-Cords
Vietnam (North) 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Yemen 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Zaire 220V 50HZ YP-21 YP-21-Europe-CEE7-16 YP-22 YP-22-Europe-Schuko-CEE77-Plug
Zambia 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug
Zimbabwe 220V 50HZ YP-61 YP-61-UK-Fused-Plug YP-61 YP-61-UK-Fused-Plug