M výrobci:
- M-audio
- M-Cody
- MAG
- Maiacu
- Majesty
- Malpro
- Maltron
- MANFROTTO
- Manhattan
- Manli
- Manta
- MapFactor
- Mapower
- Mascom
- Matrox
- Maxcube
- Maxdata
- Maxell
- MaxLink
- MaxPoint
- Maxtor
- McAfee
- mCubed
- Media Blazer
- Media-Tech
- Mellanox
- Memorex
- Mercury
- Metrologic
- Metz
- Micase
- Microcom
- MicroDowell
- Micronet
- Microsoft
- Microstar
- Microtek
- Midway
- MikroTik
- Milk computer systems
- Minolta
- MIO
- Mitsubishi Electric
- Mitsumi
- Mivvy
- MJI
- MMC
- Mode Com
- Molex
- Morex
- Motorola
- MPIO
- Mustek
- Mutoh
- MyGuide
- Mylex