| Type ▼ | Name | Year ▼ | Publisher ▼ |
|---|---|---|---|
| Motherboard |  486-PIO-2 | 1995 | First International Computer |
| Motherboard | 486-VC-HD | 199? | First International Computer |
| Motherboard | 486-VIP-IO | 1994 | First International Computer |
| Motherboard | 486-VIP-IO2 | 199? | First International Computer |
| Motherboard | 486FT55 | 1995 | Freetech |
| Motherboard | 486SLE M106 4SLE-Z1 | 199? | Chaintech Computer Co., Ltd. |
| Motherboard | 486SPM | 199? | Chaintech Computer Co., Ltd. |
| Motherboard | 486VL3H | 199? | Edom |
| Motherboard | 486WB6A3.B1 | 199? | Silicon Valley Computer, Inc. |
| Sinclair ZX Spectrum cass. | 48k Assembler | 198? | Peker Computers |
| Morrow MPZ80 disk | 48K CP/M v2.2 CBIOS E | 19?? | Morrow Designs |
| Sinclair ZX Spectrum cass. | 48k Toolkit | 1985 | Peker Computers |
| Texas instrument TI-99/4A cart. | 4A DOS | 19?? | Schmidt |
| Commodore C64 disk | 4C-Packer with Riffs | 1988 | German Spreading Service |
| Commodore C64 disk | 4Code Zipper Ver.2 | 19?? | Fairlight |
| Commodore C64 disk | 4Code Zipper Ver.2 | 1989 | Oneway |
| Bally Astrocade type-in | 4D2 | 1981 | Fabris, Robert San Jose, CA, USA |
| Motherboard | 4DMS HL3G-L4-VI | 199? | EFA Corp. |
| Motherboard | 4DMU HL3S | 199? | EFA Corp. |
| Motherboard | 4DVS | 199? | ZIDA |
| Motherboard | 4GLX3 Green-B 4GPV3.1 | 199? | Addtech Research, Inc. |
| HP 2100 Series punched tape | 4K SIO MARK SENSE CARD READER DRIVER ABS Model 20520-60001 | 197? | Hewlett-Packard |
| HP 2100 Series punched tape | 4K SIO TAPE PUNCH DRIVER Model 20304-60001 | 197? | Hewlett-Packard |
| HP 2100 Series punched tape | 4K SIO TTY DRIVER LP-COMPAT ABS Model 24123-60001 | 197? | Hewlett-Packard |
| Motherboard | 4SPI | 199? | Chaintech Computer Co., Ltd. |
| Atari ST disk | 4U Disk #001 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #002 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #003 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #004 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #005 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #006 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #008 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #009 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #010 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #011 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #012 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #014 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #015 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #016 | 199? | 4U Germany |
| Atari ST disk | 4U Disk #018 | 199? | 4U Germany |