Can be accelerated with Newer Technology's  512K or 1MB Cache SIMMs,  part #  7CC512A or 7CC1MA.

Eight SIMM sockets.  Upgraded two SIMMs at a time.

Ships with 72MB of RAM which consists of 8MB soldered to the motherboard and two 32MB SIMMs installed.

Requires 80ns, or faster, memory.

This computer comes with 4096K ROMs and an Apple 1.44MB SuperDrive that uses high-density floppy disks and reads, writes, and formats Macintosh, Windows, MS-DOS, OS/2, and ProDOS disks.

Serial Port with the phone icon supports synchronous modems, with handshaking on both output and input supported.

Sound input and output is 16-bit stereo.

This computer has an international power supply.
Line voltage: 100 to 240 volts AC, RMS single phase, automatically configured 
Frequency: 50 to 60 Hz, single phase 
Power: 454 W maximum, not including display 
Energy Star compliant 

Has a 601 Processor Direct Slot (PDS) which has either a VRAM or AV card installed in it.
three medium-performance NuBus expansion slots, One Apple Desktop Bus (ADB) port for a keyboard, mouse, and other device,  One AAUI-15 Ethernet connector, Two DMA serial (RS-232/RS-422) ports compatible with LocalTalk and GeoPort cables, Dual-channel asynchronous SCSI interface: external channel supports up to six SCSI devices (5MB/sec); internal channel supports a hard disk array (10MB/sec), 16-bit stereo sound input and output ports. Comes pre-configured with a Radius Thunder IV GX*1600 graphics accelerator card