PowerBook 165: Technical Specifications 
Microprocessor
* Motorola 68030, running at 33 MHz
Memory
* Comes with 4 MB of pseudostatic RAM (PSRAM)
* Expands to 14 MB of RAM with the addition of thirdparty PSRAM cards
Disk storage
* One builtin 1.4MB Apple SuperDrive disk drive that uses highdensity floppy disks and reads, writes, and formats Macintosh, MSDOS, OS/2, and ProDOS disks
* One internal 80 or 160 MB hard disk
Display
* 10in. (254mm) diagonal
* Backlit supertwist passivematrix display, 640 by 400 pixels
* 16 shades of gray
* Two videoout modes:
Video mirroring for simultaneous display of the same image on two screens
Dual display for full use of both screens with different images or different applications at the same time
* Builtin support for up to 256 colors on a variety of external displays
* External display options
Macintosh 12inch Monochrome Display
Macintosh 12inch RGB Display
AppleColor HighResolution RGB Display
Macintosh Color Display (14 in.)
Macintosh 16inch Color Display
Macintosh Portrait Display (15 in.)
Some VGA and SVGA monitors
Battery
* Nickelcadmium which provides 2.5 to 3 hours of computer use before recharging is necessary.
Keyboard
* Builtin keyboard with standard Macintosh layout
* Twolevel tilt adjustment
Trackball
* 30mm (approx. 1.25in.) diameter, two buttons
Clock/calendar
* CMOS customintegrated circuit with longlife lithium battery
Microphone
* Builtin omnidirectional; output voltage of 4 mV, peaktopeak, at normal volume
Interfaces
* One power adapter port
* One Apple Desktop Bus (ADB) port for keyboard, mouse, and other input devices
* Two RS422 serial ports for LocalTalk networking, printers, modems, and other devices
* One HDI30 SCSI port for hard disks, scanners, CDROM drives, and other devices
* One slot for optional modem
* One videoout port that supports 8bit density and 256 colors
* One soundout port for external audio amplifier or headphones
* One soundin port
* Security slot for use with thirdparty equipment to lock the computer
Modem
* Optional internal PowerBook Express Modem; sends and receives data at 14,400 bps and sends and receives faxes at 9600 bps. Includes Express Fax software.
* Optional internal 2400bps modem; sends faxes at 9600 bps. Includes faxsend software.
Sound generator
* Apple Sound Chip provides 8bit sound and is capable of driving stereo headphones or other stereo equipment. These devices connect to the Apple Sound Chip through the sound port.
Sound input
* 8bit sound, sampled at 11 or 22 kHz
Disability access
* CloseView, Easy Access, and visiblebeep software are included with system software. These builtin thirdparty options provide alternative means of input and output for people with disabilities.
ADB power requirements
* Maximum current draw for all ADB devices is 200 mA (milliamps). A maximum of three ADB devices is recommended.
Power requirements
* Line voltage: 110 to 220 V
* Frequency: 50 to 60 Hz
Environmental requirements
* Operating temperature: 50 F to 104 F (10 C to 40 C)
* Storage temperature: 40 F to +149 F (40 C to +65 C)
* Relative humidity: 20% to 80% noncondensing
* Operating altitude: 0 to 10,000 ft. (0 to 3048 m)
* Maximum storage altitude: 15,000 ft. (4722 m)
Size and weight
* Height: 2.25 in. (5.7 cm)
* Width: 11.25 in. (28.6 cm)
* Depth: 9.3 in. (23.6 cm)
* Weight: 6.8 lb. (3.03 kg)