Editing Macintosh LC 630 DOS Compatible (section)

== Memory and Storage ==

=== RAM Configuration ===

The DOS Compatible models feature two SIMM slots (versus one in standard LC 630):

{| class="wikitable" style="width:70%"
|-
! Location !! Type !! Maximum !! Notes
|-
| Soldered || On-board || 4 MB || Non-removable
|-
| SIMM Slot 1 || 72-pin, 80ns || 32 MB || Any standard SIMM
|-
| SIMM Slot 2 || 72-pin, 80ns || 16 MB || Single-sided SIMMs only
|-
| DOS Card || 72-pin, 80ns || 32 MB || Dedicated to DOS operations
|-
| '''Maximum System''' || || '''52 MB''' || 4 + 32 + 16 MB
|}

The DOS card can either use its dedicated RAM or share Mac motherboard memory. Dedicated RAM improves PC performance significantly.

=== Storage Systems ===

'''IDE Hard Drive:'''
* Single device support only (no master/slave)
* PIO Mode 3 maximum (11.1 MB/s)
* 8 GB addressing limit
* System 7.5.2+ required for modern IDE drives

'''CD-ROM:'''
* Apple CD 300i Plus (2X SCSI)
* Tray-loading mechanism
* Reads 656 MB and 748 MB data CDs
* Audio CD playback support