| Hardware technical documentation | /pub/sinclair/technical-docs/ZXSpectrum128+2b-+3b_AmendmentServiceManual.zip | 2,330,319 | - | | | |
| Hardware technical documentation | /pub/sinclair/technical-docs/ZXSpectrum128+3b_Schematics.png | 238,152 | - | | | |
| Hardware technical documentation | /pub/sinclair/technical-docs/ZXSpectrum128+3_Oddities.txt | 18,279 | - | | | |
| Remote link | http://worldofspectrum.org/ZXSpectrum128+3ServiceManual/ | - | - | | | Hardware technical documentation |
| Hardware technical documentation | /pub/sinclair/technical-docs/ZXSpectrum128+3_ServiceManual.pdf | 660,878 | - | | | |
| Hardware technical documentation | /pub/sinclair/technical-docs/ZXSpectrum128+3_ServiceManual.zip | 510,721 | - | | | |
| Hardware advertisement scan | /pub/sinclair/hardware-adverts/z/ZXSpectrum128+3.jpg | 337,117 | - | | | |
| Hardware advertisement scan | /pub/sinclair/hardware-adverts/z/ZXSpectrum128+3_2.zip | 668,636 | - | | | |
| Hardware picture | /pub/sinclair/hardware-pics/b/Boots+3ActionPack.jpg | 62,321 | - | | | |
| Hardware picture | /pub/sinclair/hardware-pics/z/ZXSpectrum128+3.jpg | 263,095 | - | | | |
| Remote link | http://www.shadowmagic.org.uk/spectrum/roms.html | - | - | | | Phil Kendall's Spectrum ROMs Collection |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-40-0.rom.zip | 10,131 | e9fe677c447095707f50de9bef264d12 | | | +2A/+3 v4.0 ROM 0 (128K editor) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-40-1.rom.zip | 10,102 | 993a26efad8bf08c92bc6e696b010876 | | | +2A/+3 v4.0 ROM 1 (128K syntax checker) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-40-2.rom.zip | 8,608 | 3cf30255848df9dc180a6f2ef7a24ce2 | | | +2A/+3 v4.0 ROM 2 (+3DOS) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-40-3.rom.zip | 12,630 | 657f2a2239808f56672e0bfb8dbaaa3b | | | +2A/+3 v4.0 ROM 3 (48K BASIC) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-41-0.rom.zip | 10,148 | 8db4da01fc47a5f3fe473e7d3faef0ae | | | +2A/+3 v4.1 ROM 0 (128K editor) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-41-1.rom.zip | 10,289 | 7eb743b02e289cd9d869a399e9ad7d5c | | | +2A/+3 v4.1 ROM 1 (128K syntax checker) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-41-2.rom.zip | 8,623 | 3ab9be6127bb15941d646f737663d164 | | | +2A/+3 v4.1 ROM 2 (+3DOS) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-41-3.rom.zip | 12,630 | 0ebfe4394417a46e34b2f1c750a27a85 | | | +2A/+3 v4.1 ROM 3 (48K BASIC) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-spanish-0.rom.zip | 10,576 | c171e276aa28ea7b393499ae2e7611a8 | | | Spanish +2A/+3 ROM 0 (128K editor) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-spanish-1.rom.zip | 10,326 | 84d0d76b36f1525c68b61cf5fe15b89f | | | Spanish +2A/+3 ROM 1 (128K syntax checker) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-spanish-2.rom.zip | 8,596 | 4ebca2f4bcba7123f5e749cb3d1ddf4e | | | Spanish +2A/+3 ROM 2 (+3DOS) |
| Computer/ZX Interface 2 cartridge ROM image dump | /zxdb/sinclair/entries/1000496/plus3-spanish-3.rom.zip | 12,628 | 4b91f0655d30068cd73323f5e98b543e | | | Spanish +2A/+3 ROM 3 (48K BASIC) |
| Hardware technical documentation | /zxdb/sinclair/entries/1000496/ZXSpectrum128+2b-+3b_ServiceManual.pdf | 481,586 | bab1ab938cdba3fbff4b6fb4b5ef9ef4 | None | | |