Next Up, this post and another one, both Versa M/75 models. This one is the less as common NEC Versa M/75TC - the "TC" stands for "True Color". Versa laptops had unlisted model designations based on the panel they came with from the factory per below
(no designation) = monochrome
P = Pen w/touch screen (Monochrome)
C = Color Active Matrix
D = DSTN Color (M/75 and later)
CP = Color Active Matrix with Pen/Touch
TC = True Color Active Matrix (M/75 only)
HC = "High resolution Color" Active Matrix (800x600 @256 colors - M & P/75 models only)
The M/75 and M/100 TC models were designated by a bump up by 100 in the PC model number ie - regular Versa M/75 was PC-470-XXXX and a regular Versa M/100 was PC-480-XXXX. The TC versions were PC-570-XXXX and PC-580-XXXX. The only real difference was the screen, some changes to the plastic mold to prevent installing a TC screen in a non-TC Versa or a non-TC screen into a TC versa because doing so damages either the panel, or the graphics controller due to different wiring. These used NEC NL6448AC30-09 LCD Panels unique to these models, and the thicker LCD (due to extra electronics to drive the true color support - ie 24 or 32-bit color) facilitated a thicker LCD housing where the lock tabs on the hinge housing are open-ended, the metal support is inset deeper, the hinge cover is taller and more rounded, and the LCD panel assembly itself is thicker, and has a "keyed" connector to prevent installation on the wrong laptop. Internally, the M/75 motherboards had a daughtercard for the LCD controller that could be swapped. So when restoring an M/75 or M/100, you can turn a TC model into a regular model or vice versa just by swapping the panel, and this card, and the associated plastics (or just simply removing the plastic guide).
Release Date: 1994
CPU: Intel 486 DX4 75MHz
Chipset: NEC
RAM: 8MB on the motherboard, upgradable to 40MB using Memory Cards in 4MB, 8MB, 12MB, 16MB, and 32MB Capacities.
HDD Type: 2.5" IDE
Uses Proprietary HDD Adapter: Yes, aka. "VersaPak"
Display Options: Removable LCD Panel special to the model, NL6448AC30-09 "True Color" Active Matrix 9.4" TFT
GPU: C&T 65545
VRAM: 1MB
Sound: Crystal Semiconductor CS4231KQ "Business Audio" - no OPL support
Main Battery: 7.2V 4000mAH NiMH "Smart Battery", will also work with the older Versa "Dumb Batteries"
CMOS Battery: Varta Style Barrel Battery with Molex Connector mounted to metal "skeleton" away from Motherboard
Power Supply: NEC 4-pin Proprietary, smaller pack (OP-570-4701)
Expansion: 2x PCMCIA Type II 16-bit
Internal Drives: none
Networking: Clippercom PCMCIA 14.4K Modem (Optional), Linksys PCMCIA Ethernet (Optional), NEC Branded variants
I/O (Front): "VersaTrak" Trackball
I/O (Left): 2x PCMCIA Slots, Battery Bay
I/O (Rear): PS/2 Mouse, PS/2 Keyboard, Serial 1x, Parallel 1x, Docking Port
I/O (Right): HDD/Memory shared bay, "VersaBay" for Floppy Drive or 3 different add-on modules: Versa Video (DV Capture), PCMCIA Expansion Bay (adds 2 more PCMCIA Type II Slots), or a secondary Battery
BIOS: PHOENIX Flash BIOS
Pointing Devices: "VersaTrak" Trackball