Sunrex HyperBook 300 Series

The HyperBook 300 is a 486-based laptop that was released in August 1993. It was essentially a spec-bumped version of the HyperBook 3000 Series from the year before. This laptop was sold under Sunrex's HyperData and InnovACE brand names. I've also seen one that was just generically badged "NoteBook Computer 486 Series". There is also a possibility that you could find one branded "SunRace".

The HyperBook 300 was one of a few Sunrex laptops to feature the infamous palmrest number pad. According to an archived Sunrex website, these were available with pen-touch support. I've yet to see one with it.

Specifications

Spec	Details
CPU	CPU Type: Socket 2 (probably, it uses desktop chips) - Intel (up to at least 486DX2 @50MHz, maybe higher) - AMD 486 - Cyrix 486
Chipset	Symphony
RAM	Type: Proprietary Standard: 4MB Maximum: 20MB
Hard Disk	2.5" IDE Uses proprietary adapter?: Yes Standard: 200 or 250MB
Display Options	- 9.5" Passive Matrix Grayscale @640x480 - 9.5" Passive Matrix Color @640x480 - 9.5" Active Matrix Color @640x480 - Pen Touch option available
Graphics Chipset	Cirrus Logic GD6205 VRAM: 512KB
Audio	PC Speaker
Main Battery	NiCad or NiMH
CMOS Battery	Soldered 1220 Lithium
Power Supply	Kycon KPPX-4P Connector - Power Good Model SR-310C
Disk Drives	3.5" 1.44MB Floppy Drive
PC Cards	2x PCMCIA Slots
Networking	Modem (Optional)
Other I/O	- 1x Parallel - 2x Serial - 1x VGA Out - 1x PS/2
BIOS	AMI
Pointing Device	Trackball