E2
- http://www.cambridgewargames.org.uk/members/andy/emailer/
- https://inputplus.co.uk/ralph/emailer/index.html
- https://web.archive.org/web/20050410040838/http://www.imagin8or.co.uk/mystrad.html
- https://web.archive.org/web/20051104222057/http://82.152.113.94/misc/Amstrad_Emailer_Pinouts.txt
- https://web.archive.org/web/20070930190316/http://www.en4rab.dsl.pipex.com/ JTAG Connection