We want to exactly match the 12 target strings. The simplest approach is to build an alternation group that uses literal matching for each target string. Any characters that have special meanings in regex (such as '.', '+', '[', ']', '/') must be escaped as needed. For example, in email addresses, the dot in the domain must be escaped, and in support+regex@company.co.uk the + must be escaped. Similarly, the square brackets in the inventory items must be escaped. Therefore, the final pattern will list each target item separated by a pipe character.

Below is the resulting regex pattern (remember, this string does not include the leading and trailing slashes or any flags):

2001:0db8:85a3:0000:0000:8a2e:0370:7334|
2001:db8::1:0:0:1|
2001:db8::8a2e:370:7334|
4111 1111 1111 1111|
5500-0000-0000-0004|
371449635398431|
\[SKU-A123-4X/9\]|
\[CPU_B234-5Y/8\]|
\[GPU-C345-6Z/7\]|
\[MB-D456-7W/6\]|
regex_wizard@example\.com|
support\+regex@company\.co\.uk

Since newlines are not allowed in the string, I will collapse it into one continuous line.