Four SIMM sockets.  Upgraded two SIMMs at a time.

Comes with 1MB of RAM, consisting of four 256K SIMMs.

On early SE models when 1MB SIMMs are installed, the 256KBIT resistor must be clipped to enable recognition of the higher density SIMMs. On later SEs a jumper block is used to select either high or low density SIMMs.  For SIMM and jumper positions or resistor status consult the installation guide that came with your SIMMs or call Newer Technology Technical Support at 1-800-678-3726 .

Contains 256K of ROM and an 800K floppy

Later models contain an Apple 1.44MB SuperDrive.

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

Sound output is mono.

Has an international power supply.

This computer contains a 16-bit SE Processor Direct Slot (PDS).