CTX EzBook 500 Series
The CTX EzBook 500 Series, introduced in 1995, were a series of 486 and 5x86-based laptops. Just like the earlier 300/400 Series, CTX had no consistent model name for these models, so I've just had to pick the one I thought made the most sense and use it. They were often referred to just as "CTX EzBook" with no model number, one print ad from CTX calls a model in the series the "390T", and another 3rd party add calls it the 200D. Later print ads called them the 5x86 Series and only shipped with those processors, but they did ship with 486 DX4 processors originally. On CTX's driver pages from the early 2000s, they call them the 500 Series, so I'm going to go with that.
One important note - it is very possible that these models shouldn't even count as a separate series, and should just be grouped with the 300/400 Series. I may yet do that in the future. I have a suspicion that the 500 Series laptops with 486 processors are literally just a DX4-100 400 Series with a trackpad on it. That may be the only difference, but I don't know, since I don't have good info on either. You may see this page combined in the future.
Specifications
| Spec | Details |
|---|---|
| CPU | CPU Type: Socket 3 - Intel 486DX4 @100MHz - Cyrix 5x86 @100MHz |
| Chipset | Unknown |
| RAM | Type: Proprietary Standard: 8MB Maximum: 32MB |
| Hard Disk | 2.5" IDE Uses proprietary adapter?: Unknown Standard: 420, 540, or 810MB |
| Display Options | - 10.4" Passive Matrix Color @640x480 - 10.4" Active Matrix Color @640x480 |
| Graphics Chipset | Chips & Technologies VRAM: Unknown |
| Audio | ESS |
| Main Battery | NiMH (Smart) |
| CMOS Battery | Unknown |
| Power Supply | Barrel Jack, 18V 2.2A |
| Disk Drives | 3.5" 1.44MB Floppy Drive |
| PC Cards | 2x PCMCIA Slots |
| Networking | Unknown |
| Other I/O | - 1x Parallel - 1x Serial - 1x VGA Out - 1x PS/2 - 1x Dock Connector May have audio jacks? Maybe not? |
| BIOS | Unknown |
| Pointing Device | Trackpad |
Resources
 Drivers |
|---|
Gallery
No laptop photos yet. If you own a 500 and would like to send photos in, please reach out!
Note: The following two have CPU configurations slower than what CTX stated the 500 Series supported. My guess would be that these ads incorrectly used an image of a model with a Trackpad when they should have used one of the 300/400 Series trackball models. According to CTX, the 500 only supported 486DX4-100 and 5x86-100 processors.
Page last updated (MM/DD/YYYY): 11/02/2024
Update Reason: page converted to php
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