Atari 1040 STFM Motherboard - TOS 1.0 (6 Chips) - Tested Working

ATARI STE 520 Computer - TOS 1.62 & 4Mb Ram - Tested - Working - Yellowed

ATARI 520-1040ST/STF/STFM, STE - USB Power Cartridge adapter (acsi2stm, gotek)

ATARI HDD Drive ACSI for Atari 520-1040ST/STF/STFM, STE, MegaSTE, TT030 acsi2stm

ACSI2STM Hard Disk Drive Emulator for Atari ST/STF/STFM, STE, Mega ST with Case

Rare Atari ST 1040 STFM Computer 1MB 1040 Memory Tested - Working READ Descr

A good example of an early Atari 520 STFM TOS 1.0 - 512k Ram - Upgraded 720k FDD