Virtually all American style guides recommend to follow both “i.e.” and “e.g.” with a comma (just like if “that is” and “for example” were used instead), so the very same sentence in American English would become: They sell computer components, e.g., motherboards, graphic cards, CPUs.
Is a comma used after IE?
In modern American English, a comma should follow both e.g. and i.e. And because they have both become so commonplace, it is unnecessary to place the abbreviations in italics, even though they are abbreviated Latin phrases.
Where is the comma with IE?
In the American style of writing, a comma is inserted before and after i.e. However, in the British style of writing, a comma is inserted before but not after i.e.
Should I add comma after EG?
E.g. and i.e. are both lowercase when they show up in the middle of a sentence (i.e., like this). Most American style guides recommend a period after both letters in both abbreviations. In general, you add a comma after e.g. and between each subsequent example if there is more than one item in your list.
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