The Apple Macintosh PowerBook Duo 250 is a notebook that was designed, manufactured, and sold by Apple from 1993 to 1994 as part of the Macintosh PowerBook series of Macintosh computers. The computer has been introduced on October 21, 1993, and its price started at $2500.
The new PowerBook Duo features a 33 MHz Motorola 68030 processor, 9.1″ monochrome LCD display, 4 MB of RAM, 120 MB or 200 MB hard drive, and the option to set up as a desktop Macintosh by plugging the notebook into a dedicated Duo Dock.
This Macintosh has been discontinued on May 16, 1994.
Today Macintosh PowerBook Duo 250 is 29 years old!
Macintosh PowerBook Duo 250 Release Date and Original Price
| Introduced | October 21, 1993 |
| Discontinued | May 16, 1994 |
| Model Identifier | 38 |
| Model Number | M1933LL/A M4189LL/A |
| Original Price | $2,500 |
| Colors | Grey |
| Weight | 4.2 Ibs. 1.905 KG |
| Dimensions | 1.4” H x 10.9” W x 8.5” D 3.55 cm H x 27.68 cm W x 21.59 cm D |
Tech Specs
Processor
| Processor | Motorola 68030 |
| Processor Speed | 33 MHz |
| Architecture | 32-bit |
| Number of Cores | 1 |
| System Bus | 33 MHz |
| Cache | 0.5 KB L1 |
| Coprocessor | None |
Storage & Media
| Storage | 120 MB 200 MB |
| Media | None |
Memory
| Built-in Memory | 4 MB |
| Maximum Memory | 24 MB |
| Memory Slots | 1 – Duo |
| Minimum Speed | 70 ns |
| ROM | Unknown |
| Interleaving Support | No |
Display
| Built-in Display | 9.1″ monochrome active-matrix LCD |
| Resolutions | 640 x 400 |
Graphics
| Graphics Card | None |
| Graphics Memory | None |
| Display Connection | None |
Expansion
| Expansion Slots | Modem Dock (152-pin PDS) |
| Hard Drive Interface | SCSI |
| Bays | Unknown |
Software
| Original OS | System Software 7.1 |
| Maximum OS | Mac OS 7.6.1 |
| Firmware | Macintosh ROM |
Connections
| Wi-Fi | None |
| Ethernet | None |
| Modem | Internal modem/fax card |
| Bluetooth | None |
| ADB | None |
| Serial | 1 |
| SCSI | HDI-30 |
| Floppy Port | None |
| Audio In | 1 – 3.5-mm analog input jack 1 – Built-in microphone |
| Audio Out | 1 – 3.5-mm analog output jack 1 – Built-in speaker |
| Infrared | None |
| Display | None |
Keyboard and trackpad
| Keyboard | Built-in 64-key (U.S.) or 64-key (ISO) 3.0-mm travel keyboard |
| Trackpad | Built-in 25-mm trackball pointing device |
Power
| System Battery | PowerBook Duo Type II (NiMH) |
| Backup Battery | Unknown |
| Maximum Continuous Power | 25 W |
| Line Voltage | Unknown |
| Power Adapter | Unknown |
References:
Apple Support – Macintosh PowerBook Duo 250: Technical Specifications
