gadgets an iPhone iPhones an iPad iPads a MacBook Pro MacBook Pros a Mac Macs a battery a charger a cable a peripheral equipment My computer supports USB. Are there any USB ports? a USB port a USB-C port This monitor supports HDMI. Are there any HDMI ports? This device supports Thunderbolt. Is there any Thunderbolt port? a smartphone smartphone a tablet tablets a laptop laptops a computer computers a device devices an electronic device electronic devices electronics is uncountable. hardware Hardware is uncountable. a smartwatch a headphone earbuds earphones a one-ear earphone a bluetooth speaker bluetooth headphones a pair of bluetooth headphones bluetooth earbuds bluetooth earphones a bluetooth headset a bluetooth device a wireless speaker a pair of wireless speakers a pair of wireless headphones wireless earbuds a pair of wireless earbuds a kindle an e-reader an e-book reader an e-ink reader HDMI cable a monitor a mouse a power cable a thunderbolt cable a trackpad a USB-cable a webcam an engine an electrical parts a double-a battery a triple-a battery A double-a battery is bigger than a triple-a battery. a compact yet powerful device a sodium ion battery # ナトリウムイオンバッテリー a sodium ion power bank # ナトリウムイオン電池 a lithium ion battery a lithium ion power bank