|Max Ram: ||512k|
|Ram Type:||DRAM Chips|
|RTC: ||Yes on A500 version, None on A500 version|
|Connection: ||A500/+ Trapdoor slot|
512k memory expansion for the A500 and A500+. The A500 version includes a battery backedup clock because the A500+ already has one on the motherboard. You can of course use either version on either the A500 or A500+. They include a memory switch for disabling the additional RAM, primarily for compatibility reasons with old software.