From Apple-History.com

Introduced in October 1992, the Duo 230 was identical to the 210 with the exception of a faster 33 Mhz 68030 processor. It sold for $2,610, and was discontinued in July of 1994.

Codename: DBLite, BOB W (Best of Both Worlds), Cinnamon
CPU: Motorola MC68030
CPU Speed: 33 MHz
Bus Speed: 33 MHz
Data Path: 32 bit
ROM: 1 MB
RAM Type: unique
Minimum RAM Speed: 70 ns
Onboard RAM: 4 MB
RAM Slots: 1
Maximum RAM: 24 MB
Level 1 Cache: 0.5 kB
Screen: 9" supertwist grayscale LCD
Maximum Resolution: 4-bit 640x400
Slots: Modem, Dock (152-pin PDS)
Hard Disk: 80-160 MB
Serial: 1
Speaker(s): mono 8 bit
Microphone: mono 8 bit
Gestalt ID: 32
Power: 25 Watts
Weight: 4.2 lbs.
Dimensions: 1.4" H x 10.9" W x 8.5" D
Minimum OS: 7.1
Maximum OS: 7.6.1
Introduced: October 1992
Terminated: July 1994